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**1. Homework Statement**

1) According to Mayer’s equation,

C(p) – C(v) = R ------------ (1)

Where C(p) = specific heat at constant pressure

C(v) = specific heat at constant volume

R = Universal gas constant

But sometimes the above equation is used in the following way,

C(p) – C(v) = R/J ---------------- (2)

Where C(p) = gram molecular specific heat of the gas at constant pressure

C(v) = gram molecular specific heat of the gas at constant volume

R = Universal gas constant

J = Mechanical equivalent of heat

**2. Homework Equations**

**3. The Attempt at a Solution**

What are the units of C(p) & C(v) in equation(1)?