A quantity of gas is enclosed in a cylinder by a piston that can move. When the piston is pushed inward, the gas volume gets smaller while the temperature remains unchanged. What happens to the gas pressure, and what is the reason?
- Apressure decreases; the molecules have less room to move in the cylinder
- Bpressure decreases; the molecules move more slowly between collisions
- Cpressure increases; the molecules collide more frequently with the piston
- Dpressure unchanged; the temperature of the gas is constant