Another explosive, gas producing reaction: TNT 2 C 7
H 5 N 3 O 6 —> 3 N 2 + 5 H 2 O + 7
a. Calculate the number of moles of carbon monoxide produced if 2550 grams TNT decomposes according to the equation above.
b. In a 1.00 L container, what would be the pressure of this many moles of CO at 5000 °c?
c. What volume would be occupied by this number of miles at standard pressure (101.3 kPa) and 5000 °c?
Answers
a. the number of moles of carbon monoxide is 39.21875 mol CO
b. the pressure of CO in a 1.00 L container at 5000°C is 178,426 atm.
c. the volume occupied by 39.21875 moles of CO at standard pressure (101.3 kPa) and 5000°C is 17,706 L.
The given chemical equation is incorrect as it shows the production of carbon monoxide (CO) which is not produced in the reaction of TNT. The correct equation for the decomposition of TNT is:
2 C7H5N3O6 -> 3 N2 + 5 H2O + 7 CO
a. Calculate the number of moles of carbon monoxide produced if 2550 grams of TNT decomposes according to the equation above.
Molar mass of TNT = (2 x 12.01) + (7 x 1.01) + (3 x 14.01) + (6 x 16.00) = 227.13 g/mol
Number of moles of TNT = 2550 g / 227.13 g/mol = 11.225 mol
From the balanced equation, 7 moles of CO are produced for every 2 moles of TNT. Therefore, the number of moles of CO produced will be:
11.225 mol TNT x (7 mol CO / 2 mol TNT) = 39.21875 mol CO
b. In a 1.00 L container, what would be the pressure of this many moles of CO at 5000°C?
We can use the Ideal Gas Law to determine the pressure of CO at 5000°C:
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.
Since the volume is given as 1.00 L, we can convert the temperature to Kelvin:
5000°C + 273.15 = 5273.15 K
The gas constant is R = 0.08206 L•atm/(mol•K).
Substituting the values into the Ideal Gas Law and solving for P:
P = nRT/V = (39.21875 mol)(0.08206 L•atm/(mol•K))(5273.15 K)/1.00 L = 178,426 atm
Therefore, the pressure of CO in a 1.00 L container at 5000°C is 178,426 atm.
c. What volume would be occupied by this number of moles at standard pressure (101.3 kPa) and 5000°C?
To determine the volume occupied by 39.21875 moles of CO at standard pressure and 5000°C, we can use the Ideal Gas Law again, but this time with the pressure and temperature given in standard units:
P = 101.3 kPa = 1.00 atm
T = 5000°C + 273.15 = 5273.15 K
Substituting these values and solving for V:
V = nRT/P = (39.21875 mol)(0.08206 L•atm/(mol•K))(5273.15 K)/(1.00 atm) = 17,706 L
Therefore, the volume occupied by 39.21875 moles of CO at standard pressure (101.3 kPa) and 5000°C is 17,706 L.
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Related Questions
Compounds:
A. Ethanol
B. Water
C. Methanol
D. 1-butanol
E. Hexane
F. Acetone
Prediction:
Fastest
Slowest
CH₂CH₂OH
H₂O
CH,OH
CH3CH₂CH₂CH₂OH
CH₂CH₂CH₂CH₂CH₂CH3
CH3COCH3
Reason for prediction:
Answers
Fastest to Slowest:- Hexane 1-butanol Ethanol Methanol Water Acetone
What is molecular structure?The ranking of the compounds from fastest to slowest can be determined by their molecular structure, intermolecular forces, and boiling points. Hexane, with its non-polar structure, has only weak London dispersion forces between its molecules, making it the fastest compound. 1-butanol has a longer carbon chain than ethanol, allowing for stronger intermolecular forces, which causes it to be slower.
What is Hydrogen bond?Ethanol, methanol, and water have polar molecules and are capable of forming hydrogen bonds. However, methanol and ethanol have smaller molecular weights and shorter carbon chains, which causes them to be faster than water. Finally, acetone has a polar carbonyl group, but its smaller molecular weight and lack of hydrogen bonding capability causes it to be the slowest compound.
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which of the following compounds will be least soluble in water? group of answer choices benzene (c6h6) acetic acid (ch3co2h) pentanol (ch3ch2ch2ch2ch2oh) ethyl methyl ketone (ch3ch2coh3) none of these compounds should be soluble in pentane.
Answers
None of these compounds are soluble in water. Benzene (C6H6) and ethyl methyl ketone (CH3CH2COCH3) are both non-polar and insoluble in water, while acetic acid (CH3CO2H) and pentanol (CH3CH2CH2CH2CH2OH) are both polar and soluble in water.
Non-polar molecules, such as benzene and ethyl methyl ketone, cannot interact with the polar water molecules, meaning that they do not dissolve in water. Polar molecules, like acetic acid and pentanol, can interact with water molecules due to their partial positive and negative charges.
This allows them to dissolve in water. Therefore, of the compounds given, benzene and ethyl methyl ketone are least soluble in water.
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What evidence supports the claim that social mediahad more of an influence outside of the Arab world thaninside it?a. Sixty five percent of Egyptians do not use theinternet at allb. Eighty four percent of internet users visit socialnetworking sites for political news,c. College educated people are more likely to use the internetd. Social media sites use bitly links to help spreadinformation
Answers
The evidence that supports the claim that social media had more of an influence outside of the Arab world than inside it is Eighty four percent of internet users visit social networking sites for political news. Option B is correct.
This statistic suggests that social networking sites have a significant influence on the dissemination of political news and information, and it implies that individuals who use the internet are more likely to consume political news through social media than through traditional media sources.
However, option (a) is also relevant because it suggests that internet penetration is lower in the Arab world, which could limit the impact of social media in the region compared to other parts of the world. Option (c) is not directly related to the claim, while option (d) is only tangentially related to the spread of information, rather than the influence of social media on society.
Hence, B. Eighty four percent of internet users visit social networking sites for political news is the correct option.
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Each value below represents a different aqueous solution at 25 °C. Classify each solution as acidic, basic, neutral.
* pH = 1.77
* [OH^-] = 4.9 x 10^-5
* pOH = 5.14
* [H^+] = 1.0 x 10^-7
* [H^+0 = 1.9 x 10^-5
* pOH = 7.00
* pH = 9.06
* [H^+] = 5.0 x 10^-10
* pOH = 13.53
* [OH^-] = 4.6 x 10^-12
Answers
pH = 1.77 = acidic
* [OH^-] = 4.9 x 10^-5 =basic
* pOH = 5.14 = basic
* [H^+] = 1.0 x 10^-7 = neutral
* [H^+0 = 1.9 x 10^-5 =acidic
* pOH = 7.00 = neutral
* pH = 9.06 = basic
* [H^+] = 5.0 x 10^-10 = acidic
* pOH = 13.53 = acidic.
* [OH^-] = 4.6 x 10^-12 = basic
according to the ph scale, which of these substances is the strongest acid?
Answers
According to the pH scale, Option A) battery acid is the most strongest acid among all the substances mentioned.
The pH scale measures the acidity or basicity of a substance. It ranges from 0 to 14, with 7 being neutral. Values below 7 indicate acidity, with lower values indicating stronger acidity. Values above 7 indicate basicity, with higher values indicating stronger basicity. The scale is logarithmic, meaning that each whole number change represents a tenfold change in acidity or basicity. For example, a substance with a pH of 4 is ten times more acidic than one with a pH of 5.
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Complete question:
According to the pH scale, which of these substances is the strongest acid?
A) Battery acid
B) Lemon juice
C) Vinegar
D) Tomato juice
E) Black coffee
F) Milk
Gamma rays have wavelengths of in the range of
meters.
a 10^12
b 10^-12
C 10^-20
d 10^20
Answers
Gamma rays are a form of electromagnetic radiation that have the shortest wavelength and highest frequency in the electromagnetic spectrum. Their wavelengths are typically in the range of picometers (10^-12 meters), which is why they are often referred to as "gamma radiation" or "gamma rays".
which of the following is not an attribute of an acid? group of answer choices it provides h ions in aqueous solution. it tastes sour. it reacts with some organic dyes to cause them to change color. it is a nonelectrolyte. it reacts with active metals.
Answers
It is a non-electrolyte is not an attribute of an acid.
What are Acids?
Acids are characterized as materials that can discharge hydrogen particles when they break up in a water-based solution. An acidic solution is one that contains more hydrogen particles, H+ than hydroxide particles, OH-. Acids have a pH value of less than 7.0.
The strength of the acid is determined by the concentration of hydrogen ions, H+.
It provides H+ ions in aqueous solution. It tastes sour. It reacts with some organic dyes to cause them to change color.It is a non-electrolyte. It reacts with active metals.When acids are mixed with a base, they react to produce a salt and water. Acidic solutions have a sour taste and can dissolve metals. Acids turn blue litmus paper red. Acids are used in numerous industrial applications, such as the production of fertilizers, plastics, and dyes, as well as the production of fuels from oil and gas.
They are employed in numerous chemical reactions and cleaning operations. They are widely used in the food industry as a preservative and to add flavor. They are also utilized in medicine to make supplements and for the treatment of diseases.
Thus, it is a non-electrolyte is not an attribute of an acid.
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What happens after a helium flash?
O the core quickly heats up and expandsO the star breaks apart in a violent explosionsO the core suddenly contractsO the core stops fusing helium
Answers
After a helium flash, which occurs in the core of a star during the later stages of its evolution, the star enters a stable phase of helium burning. During the flash, helium ignites explosively, producing a burst of energy that causes the core to expand and cool.
However, once the temperature and pressure in the core have reached the required levels again, helium burning resumes, producing energy and keeping the star stable. This process continues until the star exhausts its helium fuel, at which point it may undergo further nuclear reactions or collapse, depending on its mass. The helium flash is a crucial stage in the evolution of low- to medium-mass stars, allowing them to continue burning and shining for billions of years.
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2 NH3 + 3 CuO g 3 Cu + N2 + 3 H2O
In the above equation how many moles of N2 can be made when 19 moles of CuO are consumed?
Answers
The number of moles of N2 that can be made when 19 moles of CuO are consumed is 6 moles.
What does mole conservation entail?The law of conservation of mass can alternatively be referred to as the law of conservation of moles because mass can be mathematically translated into mass (the total moles on one side of the equation must be equal to the total moles on the other side of the equation). As a result, we can balance equations thanks to this law.
The balanced chemical equation is:
2 NH3 + 3 CuO → 3 Cu + N2 + 3 H2O
From the equation, we can see that 3 moles of CuO react with 1 mole of N2, which means that:
1 mole N2 = 3 moles CuO
So, if 3 moles of CuO produce 1 mole of N2, then 19 moles of CuO would produce:
1/3 x 19 = 6.33 moles of N2
However, we cannot have a fraction of a mole of a substance, so we need to round the answer to the nearest whole number:
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what is the number of protons of an element with a mass number of 100 and a neutron number of 40?
Answers
Explanation:
There are few simple rules to follow.
(1) The atomic number is equal to the number of protons.
Z
= number of protons
(2) In neutrally charged elements, the number of electrons is the same as the number of protons.
Z
= number of protons = number of electrons (no charge)
Otherwise, positive charge means that the element lost an electron and negative charge means it gained an electron.
(3) The atomic mass is equal to the sum of the number of protons and number of neutrons.
A
= number of protons + number neutrons
or
A
=
Z
+ number neutrons
So if you say that
Z
= 20 and
A
= 40, then
A
=
Z
+ number neutrons
40 = 20 + number of neutrons
40 - 20 = number of neutrons
Therefore,
number of neutrons = 20
what do you observe when the iron is dipped in aluminum chloride solution
Answers
Answer:
Explanation:
When Iron is dipped in Aluminium Chloride, a redox reaction occurs. Basically iron reacts with Chloride ion and forms a solid precipitate of Aluminium.
End result :Iron (II) Chloride forms and Aluminium forms the precipitate
What would you see when titrating if an indicator was not added? a) no color change would occur; it would not be clear when the equivalence point was reached. b) a color change would still occur; it would not be clear when the equivalence point was reached. c) a color change would still occur, the equivalence point would still be identifiable. d) no color change would occur; the equivalence point would still be identifiable
Answers
When titrating if an indicator was not added, you would see: no color change and it would not be clear when the equivalence point was reached. The correct option is Option A.
Titrating is the process of analyzing or measuring the concentration of a solution (titrant) by adding a solution with a known concentration (titrant) drop by drop until the chemical reaction is complete. At the point when the chemical reaction is complete, we have reached the equivalence point.
An indicator is added to change color when the solution reaches the equivalence point, allowing us to precisely measure the endpoint. The indicator gives an observable signal, typically a color change, to show that the endpoint has been achieved. In the absence of an indicator, there would be no signal to indicate the endpoint was reached.
The equivalence point would still be identifiable, but it would be more difficult to precisely determine the endpoint. Titrations that rely on indicators are typically used to determine the concentration of an unknown acid or base solution. The type of indicator used varies based on the pH range of the unknown solution.
For example, methyl orange and phenolphthalein are indicators used in the titration of acids and bases, respectively.
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Based on the relationships between molecular weight, moles, and mass of the substance, how many moles are in 40.0 grams of water? molecular weight of water is equal to 18.1 g/mol. a) 2.21 moles b) 4.42 moles c) 3,45 moles d) 2.53 moles
Answers
Answer: 2.22 moles
Explanation:
Molar mass
The molar mass of water, or H2O, can be found by adding the molar mass of two hydrogen atoms and the molar mass of one oxygen atom, which comes out to be 18.0 g/mol.
To find the moles in 40.0 grams of water, we will set up a proportion.
[tex]\frac{18.0 g}{1 mol} =\frac{40.0g}{xmol} \\[/tex]
Then, we just solve for x.
[tex]18=\frac{40}{x} \\x=\frac{40}{18} \\x=2.22 mol[/tex]
40.0 g of water is 2.22 moles.
fractional precipitation can one type of cation be removed from an aqueous mixture of multiple cations by precipitation?
Answers
Fractional precipitation is a method used to separate different cations from a mixture by selectively precipitating one type of cation while leaving the others in solution. This method is based on the solubility differences of the cations' salts in a solvent, typically water.
To remove one type of cation from an aqueous mixture of multiple cations, a suitable reagent is added to selectively precipitate the desired cation. The precipitate formed can be separated from the solution by filtration or centrifugation. The remaining solution still contains the other cations that did not precipitate.
For example, to remove calcium ions (Ca2+) from a mixture containing calcium, magnesium, and zinc ions, ammonium oxalate can be added. This will form a white precipitate of calcium oxalate, which can be separated from the solution. The remaining solution will still contain the magnesium and zinc ions.
Fractional precipitation is a useful technique in analytical chemistry for the separation and identification of cations in a mixture.
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How many milliliters (mL) of a 0.610 M NaOH solution are needed to neutralize20.0
mL of a 0.245 M H2SO4solution?
Answers
16 mL of 0.610 M NaOH solution is required to neutralize 20.0 mL of 0.245 M H2SO4 solution.
What is meant by neutralization?Chemical reaction between acid and a base that results in the formation of a salt and water is called neutralization.
2 NaOH+ H₂SO₄ → Na₂SO₄ + 2 H₂O
Number of moles of H₂SO₄ in 20.0 mL of a 0.245 M solution is: n( H₂SO₄) = M × V = 0.245 mol/L × 20.0 mL / 1000 mL/L = 0.0049 mol
n(NaOH) = 2 × n( H₂SO₄) = 2 × 0.0049 mol = 0.0098 mol
V(NaOH) = n(NaOH) / M(NaOH) = 0.0098 mol / 0.610 mol/L = 0.016 m³ = 16 mL
Therefore, we need 16 mL of the 0.610 M NaOH solution to neutralize 20.0 mL of the 0.245 M H₂SO₄ solution.
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Determine if the following statements are true and false. Type true or false in the space provided.
Part A
To rinse the entire inner surface of the buret, one should add water from a wash bottle while rotating the buret.
Part B
Rinsing the buret with water is always enough to clean the buret.
Part C
To clean the inner surface of the buret, one should wash it with soapy water three times .
Part D
After rinsing with water and soapy water solution, one can add the titrating solution and begin the titration.
Part E
Always rinse a buret with the titration solution three times before beginning a titration.
Answers
The given statements are accordingly true and false: Part A: True, Part B: False, Part C: False, Part D: False, Part E: False.
Part A: True. To ensure that entire inner surface of the buret is rinsed, water should be added while rotating the buret.
Part B: False. Rinsing the buret with water alone is not always enough , residual substances may adhere to the surface of the buret.
Part C: False. It is not always necessary, and may even be harmful if the soap is not thoroughly rinsed off.
Part D: False. The buret should be thoroughly rinsed with distilled water.
Part E: False. While it is important to rinse the buret with the titration solution before beginning a titration.
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What are 5 names for added sugars?
Answers
Added sugars are various types of sugars and syrups that are added to food products during processing . Here are five common names for added sugars: Sucrose, Dextrose, Fructose, Maltose, High fructose corn syrup .
Sucrose: it is a disaccharide made up of glucose and fructose .
High fructose corn syrup: a sweetener made from cornstarch that has been processed to convert some of its glucose into fructose.
Dextrose: a simple sugar that is chemically identical to glucose and is commonly used in processed foods.
Fructose: a simple sugar found naturally in fruits, vegetables, and honey.
Maltose: a disaccharide made up of two glucose molecules and is commonly used as a sweetener in some beers and candies.
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A 1.350 mol gas sample has a volume of 3.51 L and a pressure of 0.925 atm. At what temperature was this gas collected?
Answers
The temperature of the gas sample was [tex]269 Kelvin (K).[/tex]
To solve this problem, we can use the ideal gas law:
[tex]PV = nRT[/tex]
where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.
First, we need to rearrange the equation to solve for T:
[tex]T = PV/nR[/tex]
Now we can plug in the given values and solve for T:
[tex]T = (0.925 atm)(3.51 L)/(1.350 mol)(0.0821 L·atm/mol·K)T = 269 K[/tex]
Therefore, the temperature of the gas sample was [tex]269 Kelvin (K).[/tex]
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120 mg of codeine hydrochloride (codhcl) is dissolved in 10.0 ml of water. calculate the expected ph of the solution. the pkb and molar mass of codeine (cod) are 5.80 and 299.36 g/mol, respectively. 2. when 200.0 mg of zinc nitrate is dissolved in 100.0 ml of water, the solution ph is 5.75. calculate the pka of the zn(h2o)62 ion.
Answers
The codeine's pKa is 8.20
To calculate the expected pH of a solution of 120 mg of codeine hydrochloride in 10.0 ml of water, we first need to determine the concentration of codeine hydrochloride in the solution. We can do this by converting the mass of codeine hydrochloride to moles and dividing by the volume of the solution in liters:
moles of codhcl = 120 mg / (299.36 g/mol) = 0.000401 mol
concentration of codhcl = 0.000401 mol / 0.01 L = 0.0401 M
Next, we need to determine the pKa of codeine, which can be used to calculate the expected pH of the solution. The pKa of codeine is related to its pKb by the equation:
pKa + pKb = 14
Therefore, the pKa of codeine can be calculated as:
pKa = 14 - 5.80 = 8.20
Using this pKa value, we can calculate the expected pH of the solution using the Henderson-Hasselbalch equation:
pH = pKa + log([A⁻]/[HA])
where [A-] is the concentration of the codeine anion and [HA] is the concentration of the codeine acid (codeine hydrochloride).
The codeine anion is formed when codeine hydrochloride dissociates in water, so we need to determine the extent of dissociation. The dissociation constant (Ka) can be calculated from the pKa using the equation:
Ka = [tex]10^{-pKa}[/tex]
Ka = [tex]10^{-8.20}[/tex] = 6.31 x 10⁻⁹.
Therefore, the pKa of codeine hydrochloride is 8.20
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During a lab experiment, 48.62 grams of magnesium reacted with 32.00 grams of oxygen to produce magnesium oxide. What is the empirical formula for magnesium oxide?(atomic masses: Mg = 24.31 and O = 15.99)
Answers
The empirical formula for magnesium oxide is MgO, indicating that there is one atom of magnesium and one atom of oxygen in the compound. We can find it in the following manner.
To find the empirical formula for magnesium oxide, we need to determine the mole ratio between magnesium and oxygen in the reactants and use that to write the simplest whole-number ratio of atoms in the compound.
First, we need to convert the masses of magnesium and oxygen to moles using their atomic masses:
Moles of magnesium = 48.62 g / 24.31 g/mol = 2.00 mol
Moles of oxygen = 32.00 g / 15.99 g/mol = 2.00 mol
Next, we need to determine the mole ratio by dividing each of the mole amounts by the smallest mole amount:
Moles of magnesium / smallest mole amount = 2.00 mol / 2.00 mol = 1
Moles of oxygen / smallest mole amount = 2.00 mol / 2.00 mol = 1
The mole ratio is 1:1, which means that the empirical formula of magnesium oxide is MgO.
Therefore, the empirical formula for magnesium oxide is MgO, indicating that there is one atom of magnesium and one atom of oxygen in the compound.
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How many atoms are in 3 Na2SO4?
Answers
Explanation:
you can count it by looking at the type of element
How many grams of O₂ are present in having 3x10²3 a container, molecules? (Atomic mass O=16)
Answers
Answer:
16g
Explanation:
1 mole of O2 = 32 g = 6.022 x 10^23 molecules
3 x 10^23 molecules weights
3 x 10^23 x 32/(6.022 x 10^23)
= 15.94g or 16g
a compound consists of 25.9% nitrogen and 74.1% oxygen by mass. what is the empirical formula of the compound?
Answers
Using a 100 g sample of a compound with 25.9% nitrogen and 74.1% oxygen, we determine the empirical formula to be N₂O₅.
To determine the empirical formula of a compound, we need to find the ratio of the number of atoms of each element in the compound, in its simplest whole-number ratio. Here's how we can do it:
Assume we have a 100 g sample of the compound. Then, 25.9 g of it is nitrogen and 74.1 g is oxygen.
Convert the mass of each element to moles, using their respective molar masses:
Nitrogen: 25.9 g / 14.01 g/mol = 1.85 mol
Oxygen: 74.1 g / 16.00 g/mol = 4.63 mol
Find the ratio of the moles of each element by dividing both values by the smallest one:
Nitrogen: 1.85 mol / 1.85 mol = 1
Oxygen: 4.63 mol / 1.85 mol = 2.50
If necessary, adjust the ratio to the nearest whole number. Since we can't have half an atom, we need to multiply both values by 2:
Nitrogen: 1 x 2 = 2
Oxygen: 2.50 x 2 = 5
The empirical formula of the compound is therefore N₂O₅.
Therefore, the empirical formula of the compound is N₂O₅.
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A runner is finishing up the last leg of a 5K run. Identify and explain which organelle(s) would be heavily involved in providing the runner’s cells with energy.
Answers
The organelle heavily involved in providing runner's cells with energy during the last leg of a 5K run is the mitochondria
Which organelle would be heavily involved in providing runner’s cells with energy ?The organelle heavily involved in providing the runner's cells with energy during the last leg of a 5K run is the mitochondria. Mitochondria are referred to as the "powerhouses" of the cell because they are responsible for producing the energy currency of cell, ATP (adenosine triphosphate), through the process of cellular respiration. During exercise, demand for ATP increases, and mitochondria works harder to meet this demand by breaking down glucose and other fuel molecules to generate ATP. Therefore, runner's cells would require a high level of mitochondrial activity to provide them with energy needed to complete the run.
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write the net chemical equation for the production of hydrogen from propane and water. be sure your equation is balanced.
Answers
The net chemical equation for the production of hydrogen from propane and water is:
[tex]C_{3}H_{8}+3H_{2}O -- > 4H_{2}+3CO_{2}[/tex]
The reaction between propane and water can be used to produce hydrogen gas. The production of hydrogen gas from propane and water is an important reaction that has several applications. The balanced equation for the production of hydrogen gas from propane and water is given as follows:
[tex]C_{3}H_{8} +3H_{2}O-- > 4H_{2}+3CO_{2}[/tex]
The reaction between propane and water can be catalyzed by several metals such as nickel or platinum. The process is called steam reforming, and it is used to produce large quantities of hydrogen gas. Hydrogen is used as a fuel in fuel cells and combustion engines. It is also used in the production of ammonia and methanol, and as a reducing agent in various chemical processes.
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a crystal of green dye is added to a beaker of water. explain what will happen to the crystal of green dye. define diffusion and state the ultimate outcome of diffusion
Answers
A tumbler of water is mixed with a crystalline of green dye. There will be spread of the dye. Diffusion refers to the method of a substance spreading, which is shown by viewing the row of beakers spanning left to right.
Osmosis definition: what does this standardized testing mean?According to its official definition, osmosis is the process by which water diffuses across a membrane in order to move from an area with a high hydraulic conductivity (low solute concentrations) to one with a low potential for water (high solute concentration).
What mechanism explains how the colours permeated the liquid?When we put a drop of dye to a gelatin or gelatin plate at a certain location, it will eventually spread across the surface as the dye molecules are randomly migrating from their initial place in the gel. This is how we may detect diffusional movement using dyes.
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400.0 g of a metal absorbs 10000. j of heat energy and its temperature rises from 20.0 ºc to 103.0 ºc. what is the specific heat of the metal?
a. 0.301 J/g˚C
b. 0.255 J/g˚C
c.3.32 J/g˚C
d. 0.243 J/g˚C
Answers
Specific heat of the metal is approximately 0.301 J/gºC (option a).
Let's discuss it further below.
The specific heat of the metal can be calculated using the formula:
q = mcΔT
where q is the heat absorbed (10000 J), m is the mass of the metal (400 g), c is the specific heat, and ΔT is the change in temperature (103.0 ºC - 20.0 ºC).
Step 1: Calculate ΔT:
ΔT = 103.0 ºC - 20.0 ºC = 83.0 ºC
Step 2: Rearrange the formula to solve for c:
c = q / (mΔT)
Step 3: Plug in the given values and solve for c:
c = 10000 J / (400 g * 83.0 ºC) = 10000 J / 33200 gºC ≈ 0.301 J/gºC
So, the specific heat of the metal is approximately 0.301 J/gºC (option a).
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true or false: the volume of space in the tube is the volume of the hydrogen and the same space is also the volume of the water vapor
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The statement that the volume of space in the tube would be equal to the sum of the volumes of hydrogen and water vapor is true if the tube is exposed to the atmosphere.
The assertion might not be accurate, though, if the tube is inside a closed system.
It relies on the circumstances surrounding the tube's observation. Assuming the tube is at equilibrium and the hydrogen and water vapor are thoroughly mixed inside the tube, if the tube is open to the atmosphere, then the amount of space in the tube would indeed equal the combined volume of hydrogen and water vapor.
However, if the tube is in a closed system, like a sealed container, the volume of the space inside the tube might not be the same as the volume of the hydrogen and water vapor because the gas molecules there might be interacting with the container's walls or going through pressure or temperature changes. Consequently, the claim may be accurate or untrue depending on the specific context.
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if the percent yield is 80.2%, what mass of k (in grams) is needed to obtain 27.6 g of h2? (assume in excess of hcl).
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Stoichiometry and the idea of percent yield can be used to calculate the mass of K required to produce 27.6 g of H2. The reaction's balanced chemical equation is 2 K + 2 HCl 2 KCl + H2.
How much kclo3 is required to make 32.0 g of o2?Response and justification Hence, 126.23 g of potassium chlorate are needed to generate 32 g of oxygen.
How is yield determined in g?Divide the mass of the reactant by the molecular weight to get the mass per mole. As an alternative, we can multiply the liquid solution's density in grammes per millilitre by the amount of reactant solution in millilitres. Next, divide the outcome by the reactant's molar mass.
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What is the percent yeild of an Fe-Containing product if the 2. 9 grams is isolated from the reaction of 24. 1 g Ca3(PO4)2 and 15. 2 g Fe(NO3)2
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The substance that contains iron has a yield of 30.7%.
To determine the percent yield of an Fe-containing product, we first need to determine the theoretical yield. This is the maximum amount of product that can be obtained based on the balanced chemical equation and the amount of reactants used.
The balanced chemical equation for the reaction between Ca₃(PO₄)₂ and Fe(NO₃)₂ is:
3Ca₃(PO₄)₂ + 10Fe(NO₃)₂ → 2Fe₃(PO₄)₂ + 30Ca(NO₃)₂
Using the given masses, we can determine the limiting reactant and then calculate the theoretical yield of Fe₃(PO₄)₂
First, we need to convert the masses of Ca₃(PO₄)₂ and Fe(NO₃)₂ to moles:
24.1 gCa₃(PO₄)₂ × (1 mol Ca₃(PO₄)₂/310.18 g) = 0.0778 mol Ca₃(PO₄)₂
15.2 gFe(NO₃)₂ × (1 mol Fe(NO₃)₂/179.86 g) = 0.0845 mol Fe(NO₃)₂
The stoichiometric ratio betweenCa₃(PO₄)₂ and Fe(NO₃)₂ is 3:10, so the amount of Fe(NO₃)₂used is limiting. Therefore, the theoretical yield of Fe₃(PO₄)₂ is:
0.0845 mol Fe(NO₃)₂ × (2 mol Fe₃(PO₄)₂/10 mol Fe(NO₃)₂) × (559.68 g Fe₃(PO₄)₂/1 mol Fe₃(PO₄)₂) = 9.43 g Fe₃(PO₄)₂
Now, to calculate the percent yield, we divide the actual yield (2.9 g) by the theoretical yield (9.43 g) and multiply by 100:
Percent yield = (2.9 g/9.43 g) × 100 = 30.7%
Therefore, the percent yield of the Fe-containing product is 30.7%. This indicates that the reaction did not proceed to completion, and some Fe3(PO4)2 was left unreacted or lost during the isolation process.
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