7. Gases

The Ideal Gas Law: Density

7. Gases

The Ideal Gas Law: Density

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The Ideal Gas Law: Density

The Ideal Gas Law: Density Example 1

The Ideal Gas Law: Density

The Ideal Gas Law: Density

The Ideal Gas Law: Density Example 2

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The Ideal Gas Law and Molar Mass and Density of a Gas

Using the Ideal Gas Law to Determine the Density of a Gas

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Molar Mass and Density Using Ideal Gas Law

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Molar Mass and Density Using Ideal Gas Law

Applications of the Ideal Gas Law: Density of a Gas

Find the Density of a Gas (Ideal Gas Law)

Gas density and PV=nRT, the ideal gas law

Crash Chemistry Academy

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Practice this topic

Multiple Choice

Consider two containers of gases at the same temperature. One has helium at a pressure of 1.00 atm. The other contains carbon dioxide with the same density as the helium gas. What is the pressure of the carbon dioxide gas sample?

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Multiple Choice

Determine the molecular formula of a gaseous compound that is 49.48% carbon, 5.19% hydrogen, 28.85% nitrogen, and 16.48% oxygen. At 27°C, the density of the gas is 1.5535 g/L and it exerts a pressure of 0.0985 atm.

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Multiple Choice

Calculate the density of argon gas at 22.5℃ and a pressure of 2.0 atm.

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Textbook Question

Consider the following samples of gases:

If the three samples are all at the same temperature, rank them with respect to (c) density

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Textbook Question

A 1.0-L container of liquid nitrogen is kept in a closet measuring 1.0 m by 1.0 m by 2.0 m. Assuming that the container is completely full, that the temperature is 25.0 °C, and that the atmospheric pressure is 1.0 atm, calculate the percent (by volume) of air that is displaced if all of the liquid nitrogen evaporates. (Liquid nitrogen has a density of 0.807 g/mL.)

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Textbook Question

Rank the following gases from least dense to most dense at 101.33 kPa and 298 K: O2, Ar, NH3, HCl.

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Textbook Question

Rank the following gases and vapors from least dense to most dense at 101.33 kPa and 298 K: water vapor 1H2O1g22, nitrogen 1N22, hydrogen sulfide 1H2S2.

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Textbook Question

(a) Calculate the density of dinitrogen tetroxide gas 1N2O42 at 111.5 kPa and 0 °C.

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Textbook Question

(b) Calculate the molar mass of a vapor that has a density of 7.135 g>L at 12 °C and 99.06 kPa.

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Textbook Question

What is the density (in g/L) of hydrogen gas at 20.0 °C and a pressure of 1655 psi?

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Textbook Question

The matter in interstellar space consists almost entirely of hydrogen atoms at a temperature of 100 K and a density of approximately 1 atom>cm3. What is the gas pressure in millimeters of mercury?

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Textbook Question

A sample of N2O gas has a density of 2.85 g/L at 298 K. What is the pressure of the gas (in mmHg)?

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Textbook Question

What is the density in g/L of a gas mixture that contains 27.0% F2 and 73.0% He by volume at 714 mm Hg and 27.5 °C?

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Textbook Question

What are the molecular weights of the gases with the following densities: (b) 1.053 g/L at 25 °C and 752 mm Hg

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Textbook Question

Propane, C3H8, liquefies under modest pressure, allowing a large amount to be stored in a container. (a) Calculate the number of moles of propane gas in a 20-L container at 709.3 kPa and 25 C. (b) Calculate the number of moles of liquid propane that can be stored in the same volume if the density of the liquid is 0.590 g/mL. (c) Calculate the ratio of the number of moles of liquid to moles of gas. Discuss this ratio in light of the kinetic-molecular theory of gases.

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Textbook Question

Two 112-L tanks are filled with gas at 330 K. One contains 5.00 mol of Kr, and the other contains 5.00 mol of O2. Considering the assumptions of kinetic–molecular theory, rank the gases from low to high for each of the following properties. (b) Density (g/L)

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Textbook Question

The density of a gas of unknown molar mass was measured as a function of pressure at 0 C, as in the table that follows. (b) Why is d>P not a constant as a function of pressure?

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Textbook Question

The density of a gas of unknown molar mass was measured as a function of pressure at 0 C, as in the table that follows. (a) Determine a precise molar mass for the gas. [Hint: Graph d>P versus P.]

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Textbook Question

An 11.5-mL sample of liquid butane (density = 0.573 g>mL) is evaporated in an otherwise empty container at a temperature of 28.5 °C. The pressure in the container following evaporation is 892 torr. What is the volume of the container?

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Textbook Question

A quantity of N2 occupies a volume of 1.0 L at 300 K and 1.0 atm. The gas expands to a volume of 3.0 L as the result of a change in both temperature and pressure. Find the density of the gas at these new conditions.

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Textbook Question

A gas mixture composed of helium and argon has a density of 0.670 g>L at a 755 mmHg and 298 K. What is the composition of the mixture by volume?