Question

The number of moles of water present in $180\, gm$ of water is

• A. 18
• B. 5
• C. 100
• D. 10

Answer 1

Answer: (D)

10

Answer 2

Molecular weight of water $= 18$ $\therefore\,\,\,$ No. of moles of water $=\frac{\text { Mass }}{\text { Molecular mass }}$ $=\frac{180}{18}=10$ moles