Calculate the number of moles and the number of molecules present in 1.4 g of ethane `(C_(2)H_(4))` gas. What is the volume occupied by the same amount of ethene?

Explanation

To solve the problem, we need to calculate the number of moles and the number of molecules present in 1.4 g of ethane (C₂H₄) gas, and then find the volume occupied by the same amount of ethane at standard temperature and pressure (STP).

### Step 1: Calculate the molar mass of ethane (C₂H₄)

1. **Identify the atomic masses**:
- Carbon (C) = 12 g/mol
- Hydrogen (H) = 1 g/mol

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