You draw back on the piston of a pump and the volume of air in the pump doubles. which of the following happens?

a. half of the gas leaks out and the pressure is reduced.

b. the temperature of the room doubles.

c. the number of collisions per unit area is reduced by one-half.

d. the number of collisions per unit area doubles.

If you draw back the pistion, it means that the pressure is reduced and the volume is increased. Reducing the pressure means less collisions. So consequently, following the kinetic theory of gases, the temperature also reduces. Hence, the answer is C.

When a supply of hydrogen gas is held in a 4-liter container at 320 K it exerts a pressure of 800 torrs. The supply is moved to a 2-liter container, and cooled to 16When a supply of hydrogen gas is held in a 4-liter container at 320 K it exerts a pressure of 800 torrs. The supply is moved to a 2-liter container, and cooled to 160 K. What is the new pressure of the confined gas?0 K. What is the new pressure of the confined gas?

Explanation: