In Joly's differential steam calorimeter, `3g` of an ideal gas is ccontained in a rigid closed sphere at `20^@C`. The sphere is heated by steam at `100^@C` and it is found that an extra `0.095 g` of steam has condensed into water as the temperature of the gas becomes constant. Calculate the specific heat capacity of the gas in `(Jg^(-1) K^(-1).` The latent heat of vaporization of `water = 540 cal g ^(-1)`.