2 litres of a gas is enclosed in a vessel at a pressure of 760 mm Hg. If temperature remains constant, calculate pressure when volume changes to 4 dm³.

Convert the following:

(i) 37 K to °C

(ii) 273 K to °C

(iii) -27°C to K

(iv) 27°C to K

At what temperature in degree centigrade will the volume of a gas, which is originally at 0°C, double itself, pressure remaining constant?

Calculate the volume (in cm³) of air expelled from a vessel containing 0.4 litres of it at 250 K, when it is heated to 27°C at the same pressure.