Calculate the maximum work down when pressure on `10g` of hydrogen is reduced from `20` to `1atm` at a constant temperature of `273K`. The gas behaves ideally. Will there be any change in internal energy. Also calculate `q. (R = 2 cal K^(-1) mol^(-1))`

Explanation

To solve the problem step by step, we will follow these procedures:

### Step 1: Calculate the number of moles of hydrogen gas.
Given:
- Mass of hydrogen (m) = 10 g
- Molar mass of hydrogen (M) = 2 g/mol

Using the formula for moles:
...