Question

Four alternatives are given in each part of this question. Choose the correct alternative and write it in your answer-book. Number of moles in 180 g of water is:

• A. 180
• B. 1000
• C. 100
• D. 10

Hint:

To calculate moles, divide the given mass of the substance by its molar mass.

Answer 1

The Correct Option is D

Moles of water can be calculated using: \[ \text{Moles} = \frac{\text{Mass}}{\text{Molar mass}} = \frac{180}{18} = 10. \]