For air, specific heat at constant pressure is `0.273 cal g^(-1) .^(@)C^(-1)` and specific heat at constant volume is `0.169 cal g^(-1).^(@)C^(-1)`, density of air `= 0.001293 g cm^(-3)` at S.T.P. Calculate the value of J.

Specific heat capacity is expressed in cal // g .^(@) C

Specific heat of argon at constant pressure is 0.125 cal.g^(-1) K^(-1) , and at constant volume 0.075 cal.g^(-1)K^(-1) . Calculate the density of argon at N.T.P. Given J = 4.18 xx 10^(7)" erg "cal^(-1) and normal pressure = 1.01 xx 10^(6)" dyne "cm^(-2) .

The specific heat of air at constant pressure is 1.05kj//kg K and the specific heat of air at constant voume is 0.718 KJ//kgK . Find this specific gas constant.

A vessel contains ice and is in thermal equilibrium at -10^(@)C and is supplied heat energy at the rate of 20 cal s^(-1) for 450 seconds. If the mass of ice is 0.1 kg and due to supply of heat energy, the whole ice just melts find the water equivalent of the vessel. (Take specific heat of ice =0.5 cal g^(-1)""^(@)C^(-1) and specific heat of the vessel is =0.1 cal g^(-1)""^(@)C^(-1) . Latent heat of fussion = 80 cal g^(-1) and assume that no heat is transferred to the surroundings)

Calculate the molar specific heat at constant volume . Given : specific heat of hydrogen at constant pressure is 6.85 "cal" mol^(-1) K^(-1) and density of hydrogen = 0.0899 "g" cm^(-3) . One mole of gas = 2.016g, J=4.2xx10^(7) "erg" cal^(-1) and 1 atmosphere = 10^(6) "dyne" cm^(-2) .

Calculate the change in internal energy when 5g of air is heated from 0^(@) to 4^(@)C . The specific heat of air at constant volume is 0.172 cal g^(-1) .^(@)C^(-1) .

5g of a gas is contained in a rigid container and is heated from 15^@C to 25^@C . Specific heat capacity of the gas at constant volume is 0.172 cal g ^(-1)^@C^(-1) and the mechanical equivalent of heat is 4.2 J cal . Calculate the change in the internal energy of the gas.