Question

A mono-atomic ideal gas (g = 1.67, molecular weight=40) is compressed adiabatically from 0.1 MPa, 300K to 0.2 MPa. The universal gas constant is 8.314 kJ Kmol^-1K^-1. The work of compression of the gas (in kJ kg^-1) is                                         

      (a) 29.7                                                               (b) 19.9

      (c) 13.3                                                               (d) 0