The work of $$146\,kJ$$ is performed in order to compress one kilo mole of gas adiabatically and in this process the temperature of the gas increases by $$7^\circ C$$. The gas is $$(R = 8.3\,J\,mol^{-1}\,K^{-1})$$

A

monoatomic

B

diatomic

C

triatomic

D

a mixture of monoatomic and diatomic