Question

A gas at a pressure p is compressed to half it original volume and twice its original temperature. The new pressure is

Answer 1

P V = n R T

P2 V2 / (P1 V1) = T2 / T1

P2 = (T2 / T1) (V1 / V2) P1 = 2 * 2 = 4

Answer 2

4p

Step-by-step explanation:

If you halve the volume the pressure will double as they are inversely proportional. If you double the temperature the particles have double the kinetic energy so the pressure will double again.

So:

p×2×2 = 4p