The specific heat at constant volume for a gas is 0.075 cal/g and at constant pressure is 0.125 cal/g. Calculate
(i) Molecular weight of gas
(ii) Atomicity of gas
(iii) Number of atoms of gas in its 1 mole

Explanation

To solve the problem step by step, we will calculate the molecular weight of the gas, its atomicity, and the number of atoms in one mole of the gas using the given specific heat values.

### Step 1: Calculate Molecular Weight (M)

We know the relationship between specific heats at constant pressure (Cp) and constant volume (Cv) and the gas constant (R):

\[
Cp - Cv = \frac{R}{M}
...