Who can answer these for me?

Who Can Answer These For Me?

Answers

Answer 1

Answer:

1. chlorine

2. hydrogen sulfide

3. phosphorus pentoxide

4. Oxygen difluoride

5. Phosphorus trichloride

6.Phosphorus pentoxide

7.Carbon disulfide

8.Nitrogen dioxide

9. Carbon monoxide


Related Questions

Why was it necessary to build and use WIPP

Answers

Answer:

The Waste Isolation Pilot Plant, or WIPP, is the world's first underground repository licensed to safely and permanently dispose of transuranic radioactive waste left from the research and productions of nuclear weapons.

predict the major organic product formed on thermal decarboxylation of the following compound.

Answers

The compound given is 3-methyl-2-pentenoic acid.

Thermal decarboxylation of 3-methyl-2-pentenoic acid is a reaction in which the carboxylic acid group is removed from the molecule, resulting in the formation of an alkene.

In this reaction, the acid group is first protonated and then the bond between the alpha carbon and the carboxyl oxygen is broken. The major organic product formed on thermal decarboxylation of 3-methyl-2-pentenoic acid is 2-methyl-1-pentene.

The initial step of the reaction involves the protonation of the carboxylic acid group of 3-methyl-2-pentenoic acid by a strong acid, typically sulfuric acid. This protonation activates the carboxyl group and makes it more susceptible to decarboxylation.

The subsequent step involves the breaking of the bond between the alpha carbon and the carboxyl oxygen, resulting in the loss of carbon dioxide and the formation of the alkene. The formed alkene in this reaction is 2-methyl-1-pentene.

Therefore, the major organic product formed on thermal decarboxylation of 3-methyl-2-pentenoic acid is 2-methyl-1-pentene.

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which of the following pairs of elements are likely to form ionic compounds? check all that apply. which of the following pairs of elements are likely to form ionic compounds?check all that apply. chlorine and bromine sodium and potassium potassium and sulfur magnesium and chlorine helium and oxygen nitrogen and iodine

Answers

Answer:

Magnesium and Chlorine

Potassium and Sulfur

Explanation:

Ionic compounds form between a metal and a non-metal

Magnesium & Chlorine and Potassium & Sulfur will form ionic compounds due to Magnesium and Potassium being metals while Chlorine and Sulfur are non metals.

Elements also have to have a large difference in electronegativity as one atom has to lose its electron to the other atom.

12a. sigma complexes are the intermediates for electrophilic aromatic substitution (eas). what are the intermediate complexes for nucleophilic aromatic substitution (snar) called

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Sigma complexes are the intermediates for electrophilic aromatic substitution (eas). The intermediate complexes for nucleophilic aromatic substitution (SNAR) are called: pi complexes.

Pi complexes form when a nucleophile, or electron-rich species, attacks an electron-deficient atom in an aromatic ring. This attack displaces the electron-deficient atom, and a pi bond is formed between the nucleophile and the aromatic ring. The displacement of the electron-deficient atom results in the formation of an intermediate pi complex.

The pi complex is a key intermediate in SNAR reactions. The pi complex can then be attacked by another nucleophile, resulting in the formation of a new aromatic compound. During this reaction, the aromaticity of the ring is maintained and the stability of the pi complex is increased.

The pi complex is a key intermediate in the EAS mechanism. In order for the reaction to take place, the pi complex must be stable. This means that the electrons must be properly distributed around the ring and the nucleophile must be strongly bound to the electron-deficient atom.

This stability helps to ensure that the reaction will proceed efficiently and that the desired product is formed. In conclusion, the intermediate complexes for nucleophilic aromatic substitution (SNAR) are called pi complexes. Pi complexes form when a nucleophile attacks an electron-deficient atom in an aromatic ring.

The displacement of the electron-deficient atom results in the formation of an intermediate pi complex, which is then attacked by another nucleophile, resulting in the formation of a new aromatic compound. The stability of the pi complex is essential for the successful completion of the reaction.

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Calculate the energy required to melt 40.3 g of ice at 0 oC.
The molar heat of fusion for ice is 6.02 kJ/mol.

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the energy required to melt 40.3 g of ice at 0 oC.The molar heat of fusion for ice is 6.02 kJ/mol. the energy required to melt 40.3 g of ice at 0 oC is 13.5 kJ.

The energy required to melt a substance is given by the formula:

q = nΔH_fus

where q is the heat absorbed or released during the phase change, n is the number of moles of the substance undergoing the phase change, and ΔH_fus is the molar heat of fusion of the substance.

To apply this formula to the melting of 40.3 g of ice at 0 oC, we first need to calculate the number of moles of ice present:

moles of ice = mass of ice / molar mass of ice

moles of ice = 40.3 g / 18.015 g/mol

moles of ice = 2.235 mol

Next, we can use the formula for q to calculate the energy required to melt the ice:

q = nΔH_fus

q = 2.235 mol × 6.02 kJ/mol

q = 13.5 kJ

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write the formula and name of a compound formed from the ionic interaction between a ion and ion. both ions are isoelectronic with the atoms of a chemically unreactive period element.

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The compound formed from the ionic interaction between a ion and ion is CsF (Cesium Fluoride). Both ions are isoelectronic with the atoms of a chemically unreactive period element. The Cs+ ion is isoelectronic with Xe while the F− ion is isoelectronic with Ne.

An isoelectronic species refers to atoms, molecules, or ions that have the same number of electrons. Isoelectronic species can include ions and neutral atoms that share the same number of electrons. The number of protons in the nucleus may be different for isoelectronic species, but the number of electrons is the same.

An ionic compound refers to a chemical compound formed by the combination of oppositely charged ions. In general, ionic compounds are formed between metallic and non-metallic elements. In ionic compounds, cations and anions combine to form a crystal lattice structure. These compounds are held together by strong electrostatic forces between oppositely charged ions. The resulting ionic bond is a strong bond, which makes ionic compounds quite stable.

CsF is the chemical formula for Cesium Fluoride. It is an ionic compound formed by the combination of cesium cation (Cs+) and fluoride anion (F-). CsF is a white crystalline solid at room temperature with a melting point of 684°C. It is commonly used in the synthesis of fluorinated organic compounds.

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what is the balanced equation acetic acid and sodium hydroxide ?

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The balanced equation for the reaction between acetic acid and sodium hydroxide is

CH3COOH + NaOH → CH3COONa + H2O. This reaction is an example of a neutralization reaction, where an acid and a base react to produce a salt and water.

Acetic acid is an organic compound with the formula CH3COOH. It is a weak acid that dissolves in water to produce a sour or tart flavor. Sodium hydroxide, on the other hand, is a highly reactive compound with the formula NaOH. It is a strong base that reacts with acids to produce salt and water. When acetic acid and sodium hydroxide are mixed, a reaction occurs. The equation for this reaction is given below:

CH3COOH + NaOH → CH3COONa + H2O

In this equation, CH3COOH represents acetic acid, NaOH represents sodium hydroxide, CH3COONa represents sodium acetate, and H2O represents water. The equation is balanced, meaning that the same number of atoms of each element is present on both the reactant and product sides of the equation. The balanced equation above shows that acetic acid reacts with sodium hydroxide to form sodium acetate and water. The reaction between acetic acid and sodium hydroxide is an example of a neutralization reaction. This type of reaction occurs when an acid and a base react to form a salt and water.

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Select the chemical equation that most likely represents the reaction between the vinegar and the dolomite.

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Answer:

Explanation: Hello Sonic, the explanation and answer to your question is that When vinegar (acetic acid) is mixed with dolomite (a mineral composed of calcium magnesium carbonate), a chemical reaction occurs. The acetic acid reacts with the calcium and magnesium ions in the dolomite, causing them to dissolve into the vinegar solution. This results in the formation of calcium acetate and magnesium acetate, which are soluble in water. The chemical equation for this reaction is: CaMg(CO3)2 + 2CH3COOH → Ca(CH3COO)2 + Mg(CH3COO)2 + H2O + CO2 In this equation, CaMg(CO3)2 represents dolomite, CH3COOH represents acetic acid, Ca(CH3COO)2 represents calcium acetate, Mg(CH3COO)2 represents magnesium acetate, H2O represents water, and CO2 represents carbon dioxide gas. The reaction also produces bubbles of carbon dioxide gas, which can be seen as the mixture fizzes and bubbles. Overall, the reaction between vinegar and dolomite is an example of an acid-base reaction, where the acetic acid acts as the acid and the dolomite acts as the base. This reaction can be used to dissolve dolomite rocks or to create calcium and magnesium acetate solutions for various applications. Hope this helps :)

there are two naturally occuring isotopoes of silver-107 and silver-109 what is the approximate ratio of isotopes in a naturally occuring sample of silver?

Answers

Answer:

The approximate ratio of isotopes in a naturally occurring sample of silver can be calculated by considering the natural abundances of silver-107 and silver-109.

The atomic weight of silver is the weighted average of the atomic masses of its isotopes, taking into account their natural abundances. Using the atomic masses of silver-107 and silver-109 (106.90509 u and 108.90476 u, respectively) and their natural abundances (51.84% and 48.16%, respectively), we can calculate the atomic weight of silver:

Atomic weight of silver = (106.90509 u x 0.5184) + (108.90476 u x 0.4816) = 107.8682 u

This means that a naturally occurring sample of silver contains a mixture of the two isotopes in the ratio of their natural abundances, which is approximately 107.8682:100 or about 1.08:1. Therefore, for every 1.08 atoms of silver-107, there would be 1 atom of silver-109 in a naturally occurring sample of silver.

What is the approximate volume of gas in a 1.50 mol sample that exerts a pressure of 0.922 atm and has a temperature of 10.0ºC (283 K)? (R= 0.0821 L atm over mol K )

PV = nRT

V= ___ L (Answer Format: XX.X)

Answers

The approximate volume of the gas is 31.0 L in a 1.50 mol sample that exerts a pressure of 0.922 atm and has a temperature of 10.0ºC .

We can use the Ideal Gas Law equation:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

Rearranging the equation, we get:

V = (nRT) / P

Substituting the given values, we get:

V = (1.50 mol * 0.0821 L atm/mol K * 283 K) / 0.922 atm

V = 31.0 L

A gas law is a mathematical equation that describes the behavior of gases under certain conditions, such as temperature, pressure, volume, and number of moles. There are several gas laws, including Boyle's law, Charles's law, Gay-Lussac's law, and the combined gas law, among others. These laws are based on experimental observations of gas behavior and provide a way to predict how gases will behave under various conditions.

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name the compound so2 using the stock system.PLS HELPP ASAPP

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Answer:SO2 is a covalent compound made up of sulfur and oxygen atoms, so the stock system is not applicable here as it is used for naming compounds that contain metal ions with different oxidation states.Instead, the IUPAC (International Union of Pure and Applied Chemistry) name for SO2 is sulfur dioxide.

Explanation:So I helped you help me please

The compound SO₂ is named sulfur dioxide using the Stock system.

In the Stock system, the names of chemical compounds are based on the oxidation states of the elements involved. The oxidation state refers to the charge that an atom carries when it forms a compound.

Sulfur (S) has an oxidation state of +4, and oxygen (O) has an oxidation state of -2. The compound's name reflects these oxidation states.

Combining the elements and their oxidation states, the compound is named "sulfur(IV) oxide" using the Stock system. However, it is more commonly known as sulfur dioxide, which is the traditional name for the compound.

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Identify the type of symbiotic relationship described in each scenario.

Some wasps lay their eggs on caterpillars called tomato hornworms. When the eggs hatch, the young wasps burrow

into the caterpillar's body and eat it alive. The adult wasps then fly away. This is an example of

Answers

The described scenario is an example of parasitism.

Parasitism is a type of symbiotic relationship in which one species benefits while the other is harmed. In this case, the wasps benefit by using the caterpillar as a host for their young, which ultimately leads to the death of the caterpillar.

The caterpillar, on the other hand, is harmed as its body is used as a food source for the developing wasp larvae, ultimately leading to its death. This type of interaction is common in nature, with many species relying on others as a source of food or shelter, even if it comes at the cost of the host's well-being.

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Calculate (a) the moles and (b) the mass of magnesium carbonate at the start if 0. 200 moles of sulfuric acid is added to the magnesium carbonate and the excess sulfuric acid made up to a 250 cm3 solution. 25. 0 cm3 of this solution required 0. 0300 moles of sodium hydroxide for neutralisation

Answers

The number of moles of MgCO₃ is also 0.200 moles and the mass of magnesium carbonate at the start was 16.86 g.

The balanced chemical equation for the reaction between sulfuric acid (H₂SO₄) and magnesium carbonate (MgCO₃) is:

H₂SO₄ + MgCO₃ → MgSO₄ + CO₂ + H₂O

From the balanced equation, we can see that one mole of sulfuric acid reacts with one mole of magnesium carbonate to produce one mole of magnesium sulfate, one mole of carbon dioxide, and one mole of water.

The moles of magnesium carbonate at the start can be calculated from the number of moles of sulfuric acid that reacted with it, using the mole ratio from the balanced equation:

1 mole of MgCO₃ will reacts with 1 mole of H₂SO₄

Therefore, the number of moles of MgCO₃ is also 0.200 moles.

The mass of magnesium carbonate at the start can be calculated using its molar mass and the number of moles:

molar mass of MgCO₃ = 24.31 g/mol (for Mg) + 12.01 g/mol (for C) + 3(16.00 g/mol) (for 3 O) = 84.31 g/mol

mass of MgCO₃ = number of moles × molar mass

mass of MgCO₃ = 0.200 moles × 84.31 g/mol

mass of MgCO₃ = 16.86 g

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which of these pairs of elements is least likely to combine to form an ionic bond?a. carbon and oxygen
b. sodium and fluorine
c. sulfur and hydrogen
d. phosphorus and oxygen

Answers

Answer:(part a) Lithium and Chlorine, (part c) Potassium and Oxygen are likely to form an ionic compound.

Explanation:

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She measured the mass of the metal to be 352. 3 grams. Then she dropped the metal into a measuring cup and found that it displaced 18. 0 mL of water

Answers

The density of the metal will be 11.42 g/cc.

To calculate the density of the metal, we can use the following formula:

density = mass / volume

where mass is given as 225.6 grams and volume is the volume of water displaced by the metal, which is given as 19.7 mL.

However, we need to convert the volume from milliliters (mL) to cubic centimeters (cc), since the unit of density is grams per cubic centimeter (g/cc).

1 mL = 1 cc

Therefore:

volume = 19.7 mL = 19.7 cc

Now we can substitute the values into the formula:

density = 225.6 g / 19.7 cc

= 11.42 g/cc

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--The given question is incomplete, the complete question is

"First she measured the mass of the metal to be 225.6 grams. Then she dropped the metal into a measuring cup and found that it displaced 19.7 mL of water. Calculate the density of the metal."--

barium hydroxide and iron(iii) acetate solution are mixed in a flask what are the products of the reaction

Answers

Barium acetate (Ba(CH₃COO)₂) and iron(III) hydroxide (Fe(OH)₃) are the reaction's byproducts, with iron(III) hydroxide precipitating as a brownish-red substance.

When barium hydroxide (Ba(OH)₂) and iron(III) acetate [Fe(CH₃COO)₃] solutions are mixed, a double displacement reaction occurs, resulting in the formation of a precipitate and a new solution. The balanced chemical equation for the reaction is:

Ba(OH)₂ + Fe(CH₃COO)₃ → Ba(CH₃COO)₂ + Fe(OH)₃

In this reaction, the barium ion (Ba²⁺) and the acetate ion (CH₃COO⁻) switch places to form barium acetate (Ba(CH₃COO)₂) and iron(III) hydroxide (Fe(OH)₃). The iron(III) ion (Fe³⁺) combines with hydroxide ions (OH⁻) from the barium hydroxide solution to form the insoluble iron(III) hydroxide precipitate.

Therefore, the products of the reaction are barium acetate (Ba(CH₃COO)₂) and iron(III) hydroxide (Fe(OH)₃), with the formation of a brownish-red precipitate of iron(III) hydroxide.

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1
Select the correct diagram.
A substance is held in a sealed container. The substance takes the shape of the container, but the substance's particles do not fill the container's volume.



Heat is added to the substance, and all of its particles eventually vaporize. Which diagram shows how the particles are most likely arranged after the substance has completely vaporized?

Answers

There are numerous types of water. It is a solid at very low temperatures (below 0°C). When temperatures are "normal" (between 0°C and 100°C),

it's a liquid), it is. Water becomes a gas at temperatures higher than 100 °C. (steam). The temperature affects the state that the water is in. Each of the three states—solid, liquid, and gas—has a distinct set of physical characteristics. Solid, liquid, or gas are the three basic states of matter. Physical properties also include the state that a specific substance manifests. At ambient temperature, some substances, like oxygen and carbon dioxide, exist as gases, while others, like water and mercury metal, do so as liquids. The majority of metals are solids at normal temperature.

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How do you calculate % transmission

Answers

Answer:

you will have to use T = 1/10

which of the following would be the most soluble in water? question 7 options: a) ch3ch2ch2nh2 b) ch3ch2ch2ch2ch2ch2nh2 c) ch3ch2nh2 d) ch3nh2 e) ch3ch2ch2ch2nh2

Answers

Answer:

(c) CH3CH2NH2

Explanation:

The most soluble compound in water would be the one that can form hydrogen bonds with water molecules. The presence of -NH2 (amine) or -OH (hydroxyl) groups can lead to the formation of hydrogen bonds. Therefore, among the given options, the most soluble compound in water would be (c) CH3CH2NH2 (ethylamine) because it contains an amine group that can form hydrogen bonds with water molecules.

Determine the volume of a concentrated solution needed for dilution Question A stock solution has a concentration of 1.5 M SO2 and is diluted to a 0.54 M solution with a volume of 0.18 L. What was the volume of the stock solution? • Your answer should have two significant figures. Provide your answer below: FEEDBACK MORE INSTRUCTION SUBMIT Content attribution

Answers

The volume of the stock solution needed for dilution is 0.065 L.

How to find the volume of concentrated solution needed for dilution?

To determine the volume of the stock solution needed for dilution, we can use the dilution formula: C1V1 = C2V2, where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.

Given:
C1 = 1.5 M (concentration of the stock solution)
C2 = 0.54 M (final concentration after dilution)
V2 = 0.18 L (final volume)

We need to find V1, the volume of the stock solution.

Using the formula: C1V1 = C2V2, we can solve for V1:

V1 = (C2V2) / C1
V1 = (0.54 M × 0.18 L) / 1.5 M

Now, calculate the value:

V1 ≈ 0.065 L

With two significant figures, the volume of the stock solution needed for dilution is 0.065 L.

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which indicator would be the best to use for a titration between 0.30 m c6h5cooh with 0.30 m naoh? you will probably need to consult the appropriate table in the book.

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The best indicator to be used is Phenolphthalein.

Phenolphthalein changes color from colorless to pink as the solution becomes basic, which is ideal for this titration as the endpoint is when all the benzoic acid has reacted with the sodium hydroxide to form sodium benzoate, which is basic.

It is important to note that the equivalence point for this titration is not at a pH of 7, as it would be for the titration of a strong acid with a strong base. Instead, the equivalence point for the titration of a weak acid with a strong base is above a pH of 7, closer to a pH of 8-10.

Hence, Phenolphthalein would be the best indicator to use for a titration between 0.30 M [tex]C_6H_5COOH[/tex] with 0.30 M NaOH.

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Arrange these species by their ability to act as an oxidizing agent. Best oxidizing agent Au3+ Fe2+ 2+ Na+ Poorest oxidizing agent Answer Bank

Answers

AlthoughNa⁺ and Fe²⁺   are typically weaker oxidising agents than Au³⁺ , this may not always be the case in every process.

An oxidizing agent is a species that causes oxidation by accepting electrons or donating oxygen, and therefore it is characterized by having a high oxidation state. In general, the ability to act as an oxidizing agent increases as the oxidation state of the species increases. Based on this, we can arrange the given species in order from best to poorest oxidizing agent as follows:

Au³⁺ > Fe²⁺ > Na⁺

Among these species, Au³⁺ has the highest oxidation state and therefore the strongest ability to act as an oxidizing agent. Fe²⁺ has a lower oxidation state than Au³⁺, but it is still capable of acting as an oxidizing agent in certain reactions. Na⁺ has the lowest oxidation state of the three and is therefore the poorest oxidizing agent among them.

It's important to note that the ability to act as an oxidizing agent also depends on other factors, such as the nature of the other reactants involved and the reaction conditions.

Therefore, while Au³⁺ is generally a stronger oxidizing agent than Fe²⁺ and Na⁺, this may not always be the case in every reaction.

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b) what key absorbance indicative of starting material 2-methylcyclohexanone should be absent? give wavenumber, bond type and functional group.

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In the IR spectrum of 2-methylcyclohexanone, an important absorbance to be absent after the reaction is the carbonyl stretch at around 1710 cm⁻¹. This peak is indicative of the carbonyl functional group, which is present in the starting material but absent in the product, which is a cyclic ether.

The carbonyl functional group has a C=O bond, which is a strong and characteristic bond that absorbs infrared radiation at around 1710 cm⁻¹. This absorbance is an important feature in the IR spectrum of ketones and aldehydes, which both contain a carbonyl group.

In the case of the reaction of 2-methylcyclohexanone to form a cyclic ether, the carbonyl group is converted to an ether, which lacks a carbonyl functional group. Therefore, the absence of the carbonyl stretch absorbance at around 1710 cm⁻¹ in the IR spectrum of the product would indicate the successful conversion of the starting material to the desired product.

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how does having waters of hydration affect the enthalpy for dissolving?

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The presence of waters of hydration can affect the enthalpy of a substance when it is dissolved. Hydration occurs when a substance is surrounded by or interacts with water molecules.

When a substance is dissolved, the attraction between the solute molecules and the water molecules can cause an increase in the enthalpy of the reaction. This is because more energy is needed to separate the molecules and allow them to interact with the solvent. When hydrated, how does water affect the enthalpy for dissolving?The addition of waters of hydration increases the enthalpy of dissolving.The enthalpy change of dissolving a compound refers to the heat energy absorbed or released when the compound dissolves in water

. Hydration water is present in most solids. This water exists as coordinated water molecules that are bound to the ions present in the solid. As a result, when a compound dissolves in water, hydration water is also present. As a result, when a substance dissolves in water, it consumes energy to break the water's hydrogen bonds and dissolve the compound's particles. The enthalpy change of dissolving a compound is affected by the number of water molecules consumed in the hydration process. The enthalpy of dissolving a compound rises as the number of hydration water molecules increases.

Hence, when water is used to hydrate a substance, it raises the enthalpy of dissolution.The enthalpy of hydration is the energy required to hydrate a mole of ions. The hydration energy is released when the ions and water molecules interact, and the hydration shells form around the ions. The enthalpy change of dissolving a compound, like the enthalpy of hydration, is influenced by the hydration process. The enthalpy of hydration, on the other hand, is negative because it is a release of energy. The hydration energy offsets some of the energy needed to dissolve the compound's particles, resulting in a lower enthalpy of dissolving.

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After determining the amount of moles required for one of the reactants, it was shown that was the limiting reactant and was the excess reactant.
WILL MARK BRAINLIEST PLS SAVE ME FROM THAT ANN OYING GUY

Answers

You can identify the limiting reactant and the surplus reactant in a chemical reaction if you know how many moles are needed for one of the reactants.

To do this, compare the number of moles of the necessary reactant to that of the accessible reactant. The limiting reactant is the one that results in the smallest quantity of product, and the excess reactant is the one that results in the most significant amount of product.

Steps

Consider a reaction where 4 moles of the product are produced from 2 moles of reactant A and 3 moles of reactant B. The following calculation can be used to identify the limiting reactant if you have 4 moles of reactant A and 6 molecules of reactant B:

4 moles of reactant A / 2 moles required of reactant A equals 2.

6 moles of reactant B divided by 3 molecules of reactant B needed equals 2.

There is no surplus because both reactants yield the same amount of product, meaning they are both fully utilized. One reactant would be limiting and the other would be in excess of the computations that had yielded a different result.

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Answer:

After determining the amount of moles required for one of the reactants, it was shown that ✔ copper was the limiting reactant and ✔ sulfur was the excess reactant.

Explanation:

edge 2023

which compound will exhibit hydrogen bonding with itself in the liquid state? question 9 options: a) ch3och3 b) h2co c) ch3coch3 d) ch3ch2nh2 e) ch3f

Answers

The compound that will exhibit hydrogen bonding with itself in the liquid state is CH3CH2NH2.

What is hydrogen bonding?

Hydrogen bonding is a special kind of dipole-dipole attraction in which hydrogen is bonded to an element like oxygen, nitrogen, or fluorine. Hydrogen bonding is stronger than Van der Waal's forces but weaker than covalent, ionic or metallic bonds.

An explanation for the given alternatives:

a) CH3OCH3 will not exhibit hydrogen bonding with itself in the liquid state.

b) H2CO will not exhibit hydrogen bonding with itself in the liquid state.

c) CH3COCH3 will not exhibit hydrogen bonding with itself in the liquid state.

d) CH3CH2NH2 will exhibit hydrogen bonding with itself in the liquid state.

e) CH3F will not exhibit hydrogen bonding with itself in the liquid state.

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you are given 0.725 grams of a white powder and told that it is a mixture of potassium carbonate and sodium carbonate. you are asked to determine the percent composition by mass of the sample. you add some of the sample to 10.00 ml of 0.9947 m nitric acid until you reach the equivalence point. when you have added enough carbonate to completely react with the acid, you reweigh your sample and find that the mass is 0.171 g. calculate the mass of the sample that reacted with the nitric acid. calculate the moles of nitric acid that reacted with the sample.

Answers

The moles of nitric acid that reacted with the sample is  0.09947 mol.

The given problem requires you to determine the percent composition by mass of the sample which is a mixture of potassium carbonate and sodium carbonate. To do this, you must first calculate the mass of the sample that reacted with the nitric acid and the moles of nitric acid that reacted with the sample.

Given:
Mass of white powder = 0.725 g
Mass of sample after reaction = 0.171 g
Volume of nitric acid = 10.00 ml
Molarity of nitric acid = 0.9947 M


Step 1: Calculate the mass of the sample that reacted with the nitric acid.
Mass of sample that reacted with nitric acid = Mass of white powder – Mass of sample after reaction
Mass of sample that reacted with nitric acid = 0.725 g – 0.171 g
Mass of sample that reacted with nitric acid = 0.554 g

Step 2: Calculate the moles of nitric acid that reacted with the sample.
Moles of nitric acid that reacted with the sample = (Volume of nitric acid x Molarity of nitric acid)/1000
Moles of nitric acid that reacted with the sample = (10.00 ml x 0.9947 M)/1000
Moles of nitric acid that reacted with the sample = 0.09947 mol


Therefore, the mass of the sample that reacted with the nitric acid is 0.554 g and the moles of nitric acid that reacted with the sample is 0.09947 mol.

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a sample of hydrogen gas at 273 k has a volume of 4.4 l at 4.9 atm pressure. you may want to reference (pages 227 - 230) section 8.5 while completing this problem part a what is the volume if the pressure is increased to 11.1 atm ? express your answer using two significant figures.

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With a pressure rise to 11.1 atm, the hydrogen gas volume is 2.03 L.

To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas. The equation for the combined gas law is:

P₁V₁/T₁ = P₂V₂/T₂

Where P₁, V₁, and T₁ are the initial pressure, volume, and temperature, respectively, and P₂, V₂, and T₂ are the final pressure, volume, and temperature, respectively.

We can rearrange this equation to solve for V₂:

V₂ = (P₁V₁T₂)/(P₂T₁)

We are given that the initial volume (V₁) is 4.4 L, the initial pressure (P₁) is 4.9 atm, and the final pressure (P₂) is 11.1 atm. We are asked to find the final volume (V₂) when the pressure is increased to 11.1 atm.

We can assume that the temperature (T₁) is constant, since it is not specified otherwise. Therefore, we can substitute the values into the equation and solve for V₂:

V₂ = (P₁V₁T₂)/(P₂T₁)

V₂ = (4.9 atm)(4.4 L)(273 K)/(11.1 atm)(273 K)

V₂ = 2.03 L

Therefore, the volume of the hydrogen gas is 2.03 L when the pressure is increased to 11.1 atm.

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What is used to prepare a calibration curve? A solvent blank. A set of solutions with various unknown analyte concentrations. A set of solutions with a range of precisely known analyte concentrations. A set of solutions with the exact same analyte concentration.

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To prepare a calibration curve is used A set of solutions with the exact same analyte concentration.

The calibration curve is the graphical representation of the relation in between the concentration or the amount of  substance, and the signal or the measurement obtained from the analytical instrument or the assay. The calibration curve is to constructed by the measuring the signal or the response of instrument or the assay at the different known concentrations and the amounts of substance, and the plotting of these values on the graph.

The resulting curve is used to determine the concentration and the amount of the substance in the unknown sample by the measuring its signal.

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classify the radicals into the appropriate categories. Primary. Secondary. Tertiary. Allylic.

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The classification of radicals are :

(CH₃)CHCH₂CH₂ = The Secondary radical

(CH₃)CHCHCH₃ = The Tertiary radical

H₂C = The Primary radical

The radical is the atom or the molecule with the unpaired electron. The unpaired electron will gives the radical the chemical reactivity, as it is the highly reactive because of the unpaired electron.

The Primary free radicals: When the radical is attached to the two H-atoms.

The Secondary free radicals: When the radical is attached to the one H-atoms.

The Tertiary free radicals: When the radical is not attached to the any Hydrogen atoms.

The unpaired electron in the free radical is the highly reactive, the leading to the radical reactions that can be the important in the many chemical processes.

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This question is incomplete, the complete question is :

classify the radicals into the appropriate categories. Primary. Secondary. Tertiary. Allylic.

(CH₃)CHCH₂CH₂, (CH₃)CHCHCH₃, H₂C

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