A volume of 26.5 mL of nitrogen gas was collected in a tube at a temperature of 17°C and a pressure of 737 mm Hg. The next day the volume of the nitrogen was 27.1 mL with the barometer still reading 737 mm Hg. What was the temperature on the second day?​

Answer:

Iodine has an atomic number of 53 meaning 53 electrons and it gain 1 electron when reacting with a metal. We know the element is a non metal as is gains an electron

Ion is fluoride (F⁻), gaining 1 electron for a stable electron structure like noble gas neon (Ne).

Fluorine (F) is an element with 9 electrons in its neutral state. By gaining 1 electron, it forms the fluoride ion (F⁻) with 10 electrons. This allows the ion to achieve a stable electron configuration, following the octet rule.

Fluoride ions are highly reactive due to their electron configuration and tend to form ionic compounds. They play essential roles in various chemical and biological processes, such as dental health, where fluoride compounds are added to prevent tooth decay.

Fluoride ions' stability and reactivity make them important in various industrial and scientific applications, including the production of fluorine-containing compounds used in refrigerants, plastics, and pharmaceuticals.

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Answer:

.... is called acidic solution

Answer:

It is called acidic solution

Answer:

c. 800 K, 0.1 atm

Explanation:

Good luck in AP Chem

From the calculation as shpwn in the procedure below, the equilibrium constant of the substance is 6.9 * 10^-15.

The equilibrium constant for the solubility of aa solid in solution is called the solubility product Ksp. The Ksp shows the extent to which a solid is dissolved in solution.

Given that;

Fe(OH)2 ⇄Fe^2+ + 2(OH)^-

Ksp = s(2s)^2

We have s as 1.2 x 10^-5 M

So

Ksp = 4s^3

Ksp = 4( 1.2 x 10^-5 )^3

Ksp = 6.9 * 10^-15

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Answer:

2KClO3(s) = 2KCl(s) + 3O2(g)

Explanation:

2KClO3(s) = PRODUCT

2KCl(s) + 3O2(g)=REACTENT

Answer:

Explanation:

Methanes boiling point would be higher than water's

Water is a liquid because particles are held close to one another by hydrogen bonds, whereas methane is a gas because the weak IMF lets particles to spread out.

Hydrocarbon methane ( CH4 ) is a main constituent of natural gas. Because methane is a greenhouse gas (GHG), its presence in the atmosphere has an impact on the planet's climate and temperature.

A range of anthropogenic (influenced by humans) and natural sources release methane into the atmosphere.

The significant difference in polarity between oxygen and hydrogen causes the water molecules to be dipolar. As a result, a strong hydrogen bond forms between the H and O of nearby water molecules, packing the water molecules so closely together that water is a liquid at ambient temperature.

Thus, water is a liquid because particles are held close to one another by hydrogen bonds, whereas methane is a gas because the weak IMF lets particles to spread out.

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Answer:

Preheat oven to 425°F.

Pour one can of sweetened condensed milk into a casserole dish or pie plate. Cover with foil.

Place in a larger pan and fill to ¾" with water. ( Fill water as needed while baking)

Bake 60-90 minutes or until condensed milk has reached a golden brown color.

Cool completely.

Explanation:

hope this helps :D

Answer: There are 31.8 grams of copper.

Explanation:

Answer:

Explanation:

1) For every 2 moles of methane consumed, 8 moles of carbon dioxide are produced. This means that if 4 moles of methane are consumed, the reaction can occur twice, meaning 8(2)=16 moles of carbon dioxide will be produced.

2) For every 2 moles of methane consumed, 10 moles of water are produced. This means that the reaction can occur twice, and hence 10(2)=20 moles of water will be produced.

3) For every 10 moles of water produced, 13 moles of oxygen gas are consumed. This means that if we want 126 moles of water, we need the reaction to occur 12.6 times, and thus 13(12.6)=163.8 moles of oxygen gas will be consumed.

At constant temperature, if the volume of the sample of gas increases to the given value, the pressure decreases to 0.92atm.

Boyle's law simply states that "the volume of any given quantity of gas is inversely proportional to its pressure as long as temperature remains constant.

Boyle's law is expressed as;

P₁V₁ = P₂V₂

Where P₁ is Initial Pressure, V₁ is Initial volume, P₂ is Final Pressure and V₂ is Final volume.

Given the data in the question question;

We substitute our given values into the expression above to determine the new pressure.

P₁V₁ = P₂V₂

P₂ = P₁V₁ / V₂

P₂ = ( 1.53atm × 0.03L ) / 0.0501L

P₂ = 0.0459Latm / 0.0501L

P₂ = 0.92atm

Therefore, at constant temperature, if the volume of the sample of gas increases to the given value, the pressure decreases to 0.92atm.

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Answer:

The answer is 2939 moles.

Explanation:

To obtain the moles from these values you should apply the ideal gas formula because in a scuba tank all gas that you have inside is the air:

PV= nRT. (1)

Thus the moles number, n, is:

n = PV/ RT (2)

Where:

P is pressure: 195 atm;

V is volume: 350 L,

R is gas constant: 0,082 atm×L / mol×K

And T is temperature: 10°C, that must be converted in k, thus:

10°C + 273,15 = 283,15 K

Replacing these values in (2) the moles number, n, is:

2939 moles of air

Molarity is the ratio of the moles and the volume of the solution in liters. The molarity of the 0.2 mole salt is 0.1 M.

The molarity of the solution is the molar concentration of the moles of the solute dissolved in a liter of solution. It is given as,

[tex]\rm Molarity (M) = \rm \dfrac{\text{moles of solute (n)}}{\text{volume (V) in liters}}[/tex]

Given,

Moles (n) of the salt = 0.2 mol

The volume of the solution (V) = 2 L

Substituting values in the above equation:

[tex]\begin{aligned} \rm M &= \dfrac{0.2}{2}\\\\&= 0.1 \;\rm M\end{aligned}[/tex]

Therefore, 0.1 M is the molarity of the sample.

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Liquid. It's volume stays the same but liquid changes shape based on what it's contained in

Answer:

30 miles

Explanation:

Just add the numbers.

Answer:

Aquatic plants that live underwater have leaves with large air pockets inside that allow the plant to absorb oxygen from the water.

Answer:

. Plant adaptations are changes that help a plant species survive in its environment. Aquatic plants that live underwater have leaves with large air pockets inside that allow the plant to absorb oxygen from the water. The leaves of aquatic plants are also very soft to allow the plant to move with the wave.

Explanation:

HNO3+Ca(OH)2= Ca(NO3)2+H2O.Answer:

Explanation:hope this helps <3

The time in years taken for the sample to be reduced to 1.00 mg of Rn-222 from 36g is 0.57 years.

Total time for the decomposition of any element will be calculated by using the following equation as:
T = (t)ⁿ, where

t = half life time = 3.80 days

n = number of half lives

Let we calculate number of half lives as:
1- 36 → 18

2- 18 → 9

3- 9 → 3

4- 3 → 1.5

Almost 4 half lives are required, on putting values on the above equation, we get

T = (3.80)⁴

T = 208.51 = 208 days (approx) = 0.569 = 0.57 years. (1 yr = 365 days)

Hnece reqiuired time is 0.57 years (approx).

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Answer:

C. Chloroform and alcoholic KOH

Explanation:

Secondary and tertiary amines do not react with CHCl3 and alc. KOH generates isocyanide, whereas primary amine does.

They are extremely small infront of earth size.

Answer:

roughly about 246.1?

Explanation:

The two factors must be considered when predicting whether two substances will dissolve in each other are type of bonds and size of the molecules are two factors.

Solubility is the ability of solute particles to dissolve in any solvent, and solubility is directly proportional to the dissolving ability of the solute.

Solubility of any substance depends on the type of the bond present in the solute molecule i.e. polar or non polar. And it is also depends on the size of the solute as size defines the surface tenssion of the substance.

Hence type of bonds and size of the molecules are two factors.

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Answer: 100, less

Explanation:

Answer:

black hole in ourter space for the first time the scientific research

and development of the following layers lethargic

Explanation:

STUDY CORRECTION.

A 50 L baby pool has a chlorine concentration of 0.200 M. If 20 L of water evaporated on a hot summer day, 3333 M is the final concentration of the pool.

Molarity is defined as the moles of a solute per litres of a solution.

Molarity is also known as the molar concentration of a solution.

A 50 L baby pool has a chlorine concentration of 0.200 M.

So, the volume of the baby pool is 50L with a concentration of 0.200 M.

[tex]V_1[/tex]=50 L

[tex]M_1[/tex]=0.200 M

If 20 L of water evaporated on a hot summer day, the volume of the baby pool will be 30L and we have to find the concentration of the baby pool after evaporation.

[tex]V_2[/tex]=30 L

[tex]M_2[/tex]=?

Apply the formula,

[tex]M_1V_1[/tex]=[tex]M_2V_2[/tex]

50 L X 0.200 M1 = 30 L X M2

[tex]M_2[/tex] = 0.3333 M

Hence, 0.3333 M is the final concentration of the pool.

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Answer:

Negative feedback caused his pancreas to stop secreting insulin.

Explanation:

i took the test its correct

Answer:

153 g CO₂

Explanation:

To begin, the reaction is not in its simplest form. The coefficients can be divided by two. However, this will not change the answer.

CH₄ + 2 O₂ --> CO₂ + 2 H₂O

You can find the grams of CO₂ by taking the moles of O₂, using the mole to mole ratio of O₂ to CO₂ (via the coefficients), then converting moles of CO₂ to grams. You will need the molar mass of CO₂ since you want to convert it from moles to grams. This is calculated using the values on the periodic table. The ratios should be written in a manner that allows for the cancellation of units. The answer should have 3 sig figs.

12.011 g/mol + 2(15.998 g/mol) = 44.007 g/mol CO₂

6.95 moles O₂          1 mol CO₂           44.007 g CO₂
----------------------  x  -------------------  x  -------------------------  = 153 g CO₂

                                  2 mol O₂             1 mol CO₂

Answer: The atomic symbol represent an isotope that undergoes radioactive decay to produce Pb-206 can be, Polonium (Po).

The number of moles of nitrate dissolved in water if 6.15 mole of strontium nitrate is :   12.3 moles

Given data :

Moles of strontium nitrate = 6.15 moles

When strontium nitrate ( [tex]Sr(NO_{3} )_{2}[/tex] ) is placed in water it will dissociates into its ions because strontium nitrate is an ionic compound.

Next step : Represent the ionization of strontium nitrate

[tex]Sr ( NO_{3} )_{2} (aq) --- > Sr^{2+} (aq) + 2NO_{3} ^{-} (aq)[/tex]

From the Stoichiometry of the chemical reaction

I mole of strontium nitrate =  2 moles of Nitrate ions

6.15 mole of strontium nitrate = 2 * 6.15

                                                 = 12.3 moles of Nitrate

Hence we can conclude that The number of moles of nitrate dissolved in water if 6.15 mole of strontium nitrate is :   12.3 moles.

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Answer:

#1 Question answer =The global atmospheric circulation model can explain weather patterns and climate by describing how air currents move.

Explanation:

simple but still works.

Answer:

The global atmospheric circulation model can explain weather patterns and climate by describing how air currents move.

Explanation:

this is my answer

Answer:

0.5 M

Explanation:

To find the concentration, you take the moles and divide that by the liters;

[tex]\frac{moles}{liters} =\frac{25 moles}{50 L} =0.5M[/tex]

I hope this helps!