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A vessel contains 0.5 m^3 of hydrogen ga...

A vessel contains `0.5 m^3` of hydrogen gas at 300 K and pressure `10^5` Pa. How much heat should be added to it to raise the temperature to 500 K ? Molar specific heat of hydrogen is 5 cal/mol K:

A

20kcal

B

10kcal

C

5kcal

D

2.5kcal

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