The amount of oxygen in 3.6 moles of water is:

Options

A. 115.2 g
B. 57.6 g
C. 28.8 g
D. 18.4 g

Explanation

To find the amount of oxygen in 3.6 moles of water (H₂O), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the molecular formula of water**:
The molecular formula of water is H₂O, which consists of 2 hydrogen (H) atoms and 1 oxygen (O) atom.

2. **Calculate the molar mass of water (H₂O)**:
- The atomic mass of hydrogen (H) is approximately 1 g/mol.
- The atomic mass of oxygen (O) is approximately 16 g/mol.
- Therefore, the molar mass of water (H₂O) is calculated as follows:
\[ \text{Molar mass of H₂O} = (2 \times 1) + (1 \times 16) = 2 + 16 = 18 \text{ g/mol} \]

3. **Determine the total moles of oxygen in 3.6 moles of water**:
- Each mole of water contains 1 mole of oxygen.
- Therefore, in 3.6 moles of water, the moles of oxygen will also be 3.6 moles.

4. **Calculate the mass of oxygen in 3.6 moles**:
- The mass of oxygen can be calculated using the molar mass of oxygen:
\[ \text{Mass of oxygen} = \text{moles of oxygen} \times \text{molar mass of oxygen} \]
- Substituting the values:
\[ \text{Mass of oxygen} = 3.6 \text{ moles} \times 16 \text{ g/mol} = 57.6 \text{ grams} \]

### Final Answer:
The amount of oxygen in 3.6 moles of water is **57.6 grams**.

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