Calculate the final centigrade temperature required to change 20 litres of gas at 120°C and 1 atmosphere to 25 litres at 2 atmosphere.
initial ... p v = n r t ... 1 * 20 = n r 393 ... n r = 20 / 393
final ... p v = n r t ... 2 * 25 = (20 / 393) t
remember , t is absolute temperature