600 J of heat is added to a monatomic gas in a process in which the gas performs a work of 150 J . The molar heat capacity for the process is ?

The answer is 2R . Please HELP !

Question

600 J of heat is added to a monatomic gas in a process in which the gas performs a work of 150 J . The molar heat capacity for the process is ?

The answer is 2R . Please HELP !

anonymous · Answer

$$Q=U+W .     $$
Therefore , U= 600-150 =450 J .
Molar heat capacity is defined as the amount of energy needed to raise the temperature of 1 mole of substance by 1 Kelvin . 
$$C = dQ/(dT)n$$

anonymous · Answer

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