Calculate the formula unit masses of `ZnO, Na_(2)O, K_(2)CO_(3)`. Given atomic masses of Zn = 65 u, Na = 23 u, K = 39 u, C = 12 u and O = 16 u.

Explanation

To calculate the formula unit masses of ZnO, Na₂O, and K₂CO₃, we will follow these steps:

### Step 1: Calculate the formula unit mass of ZnO
1. **Identify the atomic masses**:
- Atomic mass of Zn = 65 u
- Atomic mass of O = 16 u
2. **Calculate the total mass**:
- Formula unit mass of ZnO = Atomic mass of Zn + Atomic mass of O
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