Process A 1.0 l vessel is filled with helium at a pressure of 2 atmospheres and at a temperature
of 27 °C. The vessel is heated until the pressure of the helium is doubled. In the
the volume of the vessel has changed by 1%. Calculate (a) the final temperature of the
helium, and (b) the mass of helium present in the vessel. Molar mass of helium is 4g.