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Can you show me how to calculate the Cp (heat capacity at constant volume) of air...

Can you show me how to calculate the Cp (heat capacity at constant volume) of air at 22.5 degrees Celsius? Not just give the Cp, but show how you worked it out at that temperature.

By this I mean using a Heat Capacity Table for air, ie A+BT+CT^2 etc. So the answer of Cp should be a number.

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