Gas Laws Review

A sample of gas has a volume of 2.0 liters at a pressure of 1.0 atmosphere. When the volume increases to 4.0 liters at constant temperature, what will be the resulting pressure of the sample?

• 0.25 atm

• 0.50 atm

• 1.0 atm

• 2.0 atm

A rigid cylinder contains a sample of gas at STP. What is the pressure of this gas after the sample is heated to 410 K?

• 0.50 atm

• 0.67 atm

• 1.0 atm

• 1.5 atm

Tags

NGSS.HS-PS3-2

Every time matter changes from a liquid to a gas, the matter also experiences a change in the

• molecular motion

• total molecular mass

• size of the molecules

• total number of molecules

Tags

NGSS.MS-PS1-4

The Kinetic Molecular Theory of Matter states that the higher the temperature, the faster the ____.

• Particles that make up a substance move.

• Bonds between atoms break down.

• Molecules of gas rush together.

• Lighter molecules within a substance clump together.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

As the temperature of a fixed volume of a gas increases, the pressure will ____.

• varies inversely

• decrease

• not change

• increase

At what temperature will 0.654 moles of neon gas occupy 12.30 liters at 1.95 atmospheres?

• 447 K

• 50.3 K

• 412 K

• 36.7 K

Find the final temperature of a sample of nitrogen gas at constant pressure if it starts at 27 °C and changes volume from 600 mL to 700 mL.

• 350 K

• 257 K

• 315 K

• 1400 K

Which postulate of KMT explains why the scent of fresh coffee in the morning fills up every room in the house?

• All particles are infinitely small and the size of a particle is negligible compared to the container that it holds.

• The particles of gas are in constant motion and move in straight lines.

• The particles of gas do not exert any force of attraction or repulsion on each other. There is no energy loss during a collision.

• The mean kinetic energy of the particles is directly proportional to their absolute temperature.

A sample of a pure substance in the form of a liquid is heated until it changes into a gas. Which of the following statements best describes the difference between the molecules of the pure sample in the liquid state and the molecules of the pure sample in the gas state?

• The molecules in the gas state will have more kinetic energy and be closer together than the molecules in the liquid state.

• The molecules in the gas state will have more kinetic energy and be farther apart than the molecules in the liquid state.

• The molecules in the gas state will have less kinetic energy and be closer together than the molecules in the liquid state.

• The molecules in the gas state will have less kinetic energy and be farther apart than the molecules in the liquid state.

Tags

NGSS.MS-PS1-4

What is the molar volume of any gas at STP?

• 22.4 L

• 2.24 L

• 224 L

• 6.02 x 10^23 L