Calculate :
the number of moles of methane in 0.80 g of methane.

Explanation

To calculate the number of moles of methane in 0.80 g of methane, follow these steps:

### Step 1: Determine the molecular formula and molecular mass of methane.
- The molecular formula of methane is \( CH_4 \).
- To calculate the molecular mass:
- Carbon (C) has an atomic mass of approximately 12 g/mol.
- Hydrogen (H) has an atomic mass of approximately 1 g/mol.
- Therefore, the molecular mass of methane is calculated as:
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