You are supplied with a gas containing 0.32 g of oxygen. Calculate the number of moles and number of molecules present in it.

Explanation

To solve the problem of calculating the number of moles and the number of molecules in 0.32 g of oxygen gas (O₂), we will follow these steps:

### Step 1: Determine the Molar Mass of Oxygen (O₂)
The atomic mass of a single oxygen atom (O) is approximately 16 g/mol. Since oxygen gas (O₂) consists of two oxygen atoms, the molar mass of O₂ is calculated as follows:

\[ \text{Molar Mass of O}_2 = 2 \times \text{Atomic Mass of O} = 2 \times 16 \, \text{g/mol} = 32 \, \text{g/mol} \]
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