Quarter 3 Review Part 3

A 220.0 mL sample of helium gas is in a cylinder with a moveable piston at 105 kPa and 275 K. The piston is pushed in until the sample has a volume of 95.0 mL. The new temperature of the gas is 310 K. What is the new pressure of the sample?

• 51.1 kPa

• 216 kPa

• 243 kPa

• 274 kPa

In a chemical reaction, what will happen to the amount of each product formed if there is not enough of a reactant?

• It will limit the amount of each product.

• It will limit the amount of one product, but not the other product.

• It may or may not limit the amount of a product, depending on mole ratios.

• It increases the amount of each product.

Tags

NGSS.HS-PS1-7

Which of the following is NOT a postulate of the Kinetic Molecular Theory?

• The average speed of particles is proportional to the temperature.

• Particles move in straight lines and exhibit elastic collisions.

• There are no attractive or repulsive forces between particles.

• Larger particles exert more pressure at a given temperature.

The image shows a table of volume and pressure measurements from an experiment. Which statement correctly describes the results of the experiment?

• Pressure is directly proportional to the volume.

• Based on the experiment, pressure is not related to volume.

• Pressure and volume increase by the same proportion when volume is changed.

• Pressure is inversely related to volume. 

Calculate the approximate volume of a 0.600 mol sample of gas at 15^oC and a pressure of 1 atm.

• 24.6L

• 129L

• 22.4L

• 14.2L