At 0°C and 760 mm Hg pressure, a gas occupies volume of 100 cm³. Kelvin temperature of the gas is increased by one-fifth and the pressure is increased one and a half times. Calculate the final volume of the gas.

It is found, on heating a gas, its volume increases by 50% and pressure decreases to 60% of its original value. If the original temperature was -15°C, find the temperature to which it was heated?

2500 cm³ of hydrogen is taken at S.T.P. The pressure of this gas is further increased by two and and a half times (temperature remaining constant). What volume will hydrogen occupy now?

Taking the volume of hydrogen as calculated in Q.16 what change must be made in Kelvin (absolute) temperature to return the volume to 2500 cm³ (pressure remaining constant).