An ideal gas with a fixed number of molecules is maintained at a constant pressure. At 30.0 °C, the volume of the gas is 1.25 m3. What is the volume of the gas when the temperature is increased to 150.0 °C?

A) 0.90 m3 B) 1.50 m3 C) 1.75 m3 D) 2.45 m3 E) 6.25 m3 A) 0.90 m3 B) 1.50 m3 C) 1.75 m3 D) 2.45 m3 E) 6.25 m3 C

What is the density of methane, CH4, (molecular mass = 16 u) at STP?

A) 0.357 kg/m3 B) 0.386 kg/m3 C) 0.431 kg/m3 D) 0.712 kg/m3 E) 0.951 kg/m3 A) 0.357 kg/m3 B) 0.386 kg/m3 C) 0.431 kg/m3 D) 0.712 kg/m3 E) 0.951 kg/m3

A flask contains 1.00 mole of oxygen gas, O2, at 0.00 °C and 1.013 × 105 Pa. What is the rms speed of the molecules? Note: the atomic mass of O is 16 u.

A) 230 m/s B) 460 m/s C) 651 m/s D) 920 m/s E) 1302 m/s A) 230 m/s B) 460 m/s C) 651 m/s D) 920 m/s E) 1302 m/s

How many molecules are in 0.044 kg of carbon dioxide, CO2? (atomic masses: C = 12 u; O = 16 u)

A) 3 B) 44 C) 2.20 × 1024 D) 6.02 × 1023 E) 3.85 × 1025 A) 3 B) 44 C) 2.20 × 1024 D) 6.02 × 1023 E) 3.85 × 1025

Neon gas at 305 K is confined within a constant volume at a pressure P1. If the gas has a pressure P2 when it is cooled to 125 K, what is the ratio of P2 to P1?

A) 0.410 B) 0.639 C) 0.717 D) 1.56 E) 2.44 A) 0.410 B) 0.639 C) 0.717 D) 1.56 E) 2.44

Exam 14: The Ideal Gas Law and Kinetic Theory

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An ideal gas with a fixed number of molecules is maintained at a constant pressure. At 30.0 °C, the volume of the gas is 1.25 m³. What is the volume of the gas when the temperature is increased to 150.0 °C?

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Note the following six properties: Which four of the listed properties are needed to describe an ideal gas?

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In the space between two stars, the temperature of a gas cloud is 12 K; and the density of the gas is 1.2 × 10^-8atom/m³. What is the absolute pressure of the gas?

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An automobile tire is inflated to a gauge pressure of 32 lb/in² at a temperature of -10.0 °C. Under strenuous driving, the tire heats up to 40.0 °C. What is the new gauge pressure if the volume of the tire remains essentially the same? (atmospheric pressure = 14.7 lb/in²)

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Question 4

An ideal gas is confined within a closed cylinder at a pressure of 2.026 × 10⁵ Pa by a piston. The piston moves until the volume of the gas is reduced to one-ninth of the initial volume. What is the final pressure of the gas when its temperature returns to its initial value?

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Question 5

How many air molecules are in a room at temperature 23.8 °C and standard pressure if the dimensions of the room are 3.44 m × 3.26 m × 2.28 m?

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Question 6

A silver coin has a mass of 17.75 g. If the atomic mass of silver is 107.868 u, how many silver atoms are in the coin?

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Question 7

Which one of the following statements concerning a collection of gas molecules at a certain temperature is true?

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Question 8

What is the density of methane, CH₄, (molecular mass = 16 u) at STP?

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Question 9

Complete the following statement: The absolute temperature of an ideal gas is directly proportional to

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Question 10

A flask contains 1.00 mole of oxygen gas, O₂, at 0.00 °C and 1.013 × 10⁵ Pa. What is the rms speed of the molecules? Note: the atomic mass of O is 16 u.

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Question 11

How many molecules are in 0.044 kg of carbon dioxide, CO₂? (atomic masses: C = 12 u; O = 16 u)

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Question 12

A tank contains 135 moles of the monatomic gas argon at a temperature of 15.3 °C. How much energy must be added to the gas to increase its temperature to 45.0 °C?

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Question 13

Which one of the following statements concerning the mole is false?

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Question 14

On a cold day (-3 °C), the gauge pressure on a tire is 2.0 atm. If the tire is heated to 27 °C, without changing its volume, what will the gauge pressure be?

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Question 15

Complete the following statement: The atomic mass unit (u) is defined so that 1 u is exactly equal to the mass of

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Question 16

Heat is supplied to a sample of a monatomic ideal gas at 40 °C. It is observed that the gas expands until its volume and pressure are doubled. What is the final temperature of the gas?

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Question 17

Neon gas at 305 K is confined within a constant volume at a pressure P₁. If the gas has a pressure P₂when it is cooled to 125 K, what is the ratio of P₂ to P₁?

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Question 18

Which one of the following statements concerning diffusion is true?

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Question 19

Which one of the following factors is directly responsible for the pressure exerted by a confined gas?

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Question 20

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Exam 14: The Ideal Gas Law and Kinetic Theory

An ideal gas with a fixed number of molecules is maintained at a constant pressure. At 30.0 °C, the volume of the gas is 1.25 m3. What is the volume of the gas when the temperature is increased to 150.0 °C?

Note the following six properties: Which four of the listed properties are needed to describe an ideal gas?

In the space between two stars, the temperature of a gas cloud is 12 K; and the density of the gas is 1.2 × 10-8 atom/m3. What is the absolute pressure of the gas?

An automobile tire is inflated to a gauge pressure of 32 lb/in2 at a temperature of -10.0 °C. Under strenuous driving, the tire heats up to 40.0 °C. What is the new gauge pressure if the volume of the tire remains essentially the same? (atmospheric pressure = 14.7 lb/in2)

An ideal gas is confined within a closed cylinder at a pressure of 2.026 × 105 Pa by a piston. The piston moves until the volume of the gas is reduced to one-ninth of the initial volume. What is the final pressure of the gas when its temperature returns to its initial value?

How many air molecules are in a room at temperature 23.8 °C and standard pressure if the dimensions of the room are 3.44 m × 3.26 m × 2.28 m?

A silver coin has a mass of 17.75 g. If the atomic mass of silver is 107.868 u, how many silver atoms are in the coin?

Which one of the following statements concerning a collection of gas molecules at a certain temperature is true?

What is the density of methane, CH4, (molecular mass = 16 u) at STP?

Complete the following statement: The absolute temperature of an ideal gas is directly proportional to

A flask contains 1.00 mole of oxygen gas, O2, at 0.00 °C and 1.013 × 105 Pa. What is the rms speed of the molecules? Note: the atomic mass of O is 16 u.

How many molecules are in 0.044 kg of carbon dioxide, CO2? (atomic masses: C = 12 u; O = 16 u)

A tank contains 135 moles of the monatomic gas argon at a temperature of 15.3 °C. How much energy must be added to the gas to increase its temperature to 45.0 °C?

Which one of the following statements concerning the mole is false?

On a cold day (-3 °C), the gauge pressure on a tire is 2.0 atm. If the tire is heated to 27 °C, without changing its volume, what will the gauge pressure be?

Complete the following statement: The atomic mass unit (u) is defined so that 1 u is exactly equal to the mass of

Heat is supplied to a sample of a monatomic ideal gas at 40 °C. It is observed that the gas expands until its volume and pressure are doubled. What is the final temperature of the gas?

Neon gas at 305 K is confined within a constant volume at a pressure P1. If the gas has a pressure P2 when it is cooled to 125 K, what is the ratio of P2 to P1?

Which one of the following statements concerning diffusion is true?

Which one of the following factors is directly responsible for the pressure exerted by a confined gas?

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An ideal gas with a fixed number of molecules is maintained at a constant pressure. At 30.0 °C, the volume of the gas is 1.25 m³. What is the volume of the gas when the temperature is increased to 150.0 °C?

In the space between two stars, the temperature of a gas cloud is 12 K; and the density of the gas is 1.2 × 10^-8atom/m³. What is the absolute pressure of the gas?

An automobile tire is inflated to a gauge pressure of 32 lb/in² at a temperature of -10.0 °C. Under strenuous driving, the tire heats up to 40.0 °C. What is the new gauge pressure if the volume of the tire remains essentially the same? (atmospheric pressure = 14.7 lb/in²)

An ideal gas is confined within a closed cylinder at a pressure of 2.026 × 10⁵ Pa by a piston. The piston moves until the volume of the gas is reduced to one-ninth of the initial volume. What is the final pressure of the gas when its temperature returns to its initial value?

What is the density of methane, CH₄, (molecular mass = 16 u) at STP?

A flask contains 1.00 mole of oxygen gas, O₂, at 0.00 °C and 1.013 × 10⁵ Pa. What is the rms speed of the molecules? Note: the atomic mass of O is 16 u.

How many molecules are in 0.044 kg of carbon dioxide, CO₂? (atomic masses: C = 12 u; O = 16 u)

Neon gas at 305 K is confined within a constant volume at a pressure P₁. If the gas has a pressure P₂when it is cooled to 125 K, what is the ratio of P₂ to P₁?