specific heat of gas at constant pressure

[Unlearner]

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why is the specific heat of a gas at constant pressure greater than the specific heat of a gas at a constant volume?

 

[VCU07]

why is the specific heat of a gas at constant pressure greater than the specific heat of a gas at a constant volume?

At constant volume no work is being done, thus Q=deta U vs. Q=delta U plus some number if pressure is constant.