Chapter 7 - Gas Laws Quiz

Fill in the blank below with “directly” or “inversely” for each gas law relationship. (1 pt each, 3 pts total) a. Volume of a gas is _______________ proportional to its temperature. b. Volume of a gas is _______________ proportional to its pressure. c. Pressure of a gas is _______________ proportional to its temperature.

• a. directly b. inversely c. directly

• a. inversely b. directly c. inversely

• a. directly b. directly c. inversely

• a. inversely b. inversely c. directly

A container contains three different gases, each with a pressure of 450 mm Hg. What is the total pressure of the container? (2 pts)

Mathematical Equivalence

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Explain why your answer to #2 makes sense based on the kinetic-molecular theory. (2 pts)

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NGSS.HS-PS1-5

Convert your answer to #2 to atm. (2 pts)

• 1.78 atm

• 13.3 atm

• 91.8 atm

• 1 atm

Consider a sample of an unknown gas has a pressure of 0.231 kPa, a temperature of 265 K, and a volume of 4.25 L. If it is transported to a different container with a volume of 6.00 L and a temperature of 272 K, what would you expect the pressure to be? (4 pts)

Mathematical Equivalence

ON

Using the Kinetic Molecular Theory, explain why increasing the temperature of a gas at constant volume increases its pressure.

• The gas particles move slower and collide less frequently with the walls of the container.

• The gas particles move faster and collide more frequently with the walls of the container.

• The gas particles expand and take up more space.

• The gas particles decrease in number and reduce the pressure.

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DOK Level 3: Strategic Thinking

A student measures the pressure and volume of an empty water bottle to be 1.4 atm and 2.3 L. She then decreases the pressure to 0.65 atm. What is the new volume?

Mathematical Equivalence

ON