The equivalent weight of chlorine is `35.5` and the equivalent weight of copper chloride is `99.5`. Find the formula of copper chloride if the atomic weight of Cu is `63.5`.

Explanation

To determine the formula of copper chloride (CuCl), we will use the information provided about the equivalent weights of chlorine and copper chloride, as well as the atomic weight of copper.

### Step-by-Step Solution:

1. **Identify the Given Information**:
- Equivalent weight of chlorine (Cl) = 35.5 g/equiv
- Equivalent weight of copper chloride (CuCl) = 99.5 g/equiv
- Atomic weight of copper (Cu) = 63.5 g/mol
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