Calculate the molar specific heat at constant volume . Given : specific heat of hydrogen at constant pressure is `6.85 "cal" mol^(-1) K^(-1)` and density of hydrogen = `0.0899 "g" cm^(-3)`. One mole of gas =`2.016g, J=4.2xx10^(7) "erg" cal^(-1)` and `1` atmosphere = `10^(6) "dyne" cm^(-2)`.

Explanation

To calculate the molar specific heat at constant volume (CV) for hydrogen, we can follow these steps:

### Step 1: Understand the relationship between specific heats
We know that for an ideal gas, the relationship between specific heats at constant pressure (CP) and constant volume (CV) is given by:
\[ CP - CV = R \]
Where R is the universal gas constant.

### Step 2: Convert the given specific heat at constant pressure
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