How many moles of water are present in 180 g of water

Options

A. 1 mole
B. 18 mole
C. 10 mole
D. 100 mole

Explanation

To determine how many moles of water are present in 180 g of water, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the formula for moles**:
The formula to calculate the number of moles is given by:
\[ \text{Number of moles} = \frac{\text{Given mass (g)}}{\text{Molar mass (g/mol)}} \]

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

3. **Substitute the values into the formula**:
- Given mass of water = 180 g
- Molar mass of water = 18 g/mol
- Now, substituting these values into the moles formula:
\[ \text{Number of moles} = \frac{180 \text{ g}}{18 \text{ g/mol}} = 10 \text{ moles} \]

4. **Conclusion**:
Therefore, the number of moles of water present in 180 g of water is **10 moles**.

### Final Answer:
10 moles of water are present in 180 g of water.

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