Two identical gas cylinders each contain 20.0 kg of compresses air at 1.00 x 106 pa and 275 K. One of the cylinders if fitted with a safety valve that releases air into the atmosphere if and only if the pressure in the cylinders raises above 1.10 x106 pa (the other cylinder does not have a pressure release valve). The temperature of the cylinders is then raised to 310 K. Determine:

Question

(a) The pressure in the cylinder without the pressure release valve.

Answer 1

P1/p2=t1/t2
p2=p2*T1/t2

p1=1e6*310/275=1.13e6 Pa