A 60 W electric heater was immersed in a gas taken in a constant-volume adiabatic container and it was switched on for 150s. The temperature of the gas increased by 50 °C. The heat capacity of the gas is
1
0.18 kJ K-1
2
32.37 kJ K-1
3
1.8 kJ K-1
4
3.27 kJ K-1