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5g of a gas is contained in a rigid cont...

`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.

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