Calculate the relative molecular mass of `CuSO_4 . 5 H_2O`
[At mass: C = 12, H = 1,O = 16, CI = 35.5, N = 14, Cu = 63.5, S = 32, Na = 23, K = 39, Pt =195, Ca =40, P=31, Mg = 24]

Explanation

To calculate the relative molecular mass of `CuSO₄ . 5 H₂O`, we need to sum the atomic masses of all the atoms present in the compound.

### Step-by-Step Solution:

1. **Identify the components of the compound**:
- The compound `CuSO₄ . 5 H₂O` consists of:
- 1 Copper (Cu)
- 1 Sulfur (S)
...