Question

Number of moles in 180 grams of water is

• A. 18
• B. 10
• C. 100
• D. 1

Hint:

To calculate moles, use the formula \(\text{moles} = \frac{\text{mass}}{\text{molar mass}}\).

Answer 1

The Correct Option is A

The molar mass of water (H\(_2\)O) is about 18 g/mol. To find the moles in 180 grams of water: \[\n\text{Moles} = \frac{\text{Mass}}{\text{Molar mass}} = \frac{180 \, \text{g}}{18 \, \text{g/mol}} = 10 \, \text{moles}\n\] The answer is 10 moles.