Chemistry - Mole Concept Question with Solution | TestHub

The chemical formula of water is $H_{2}O$.

Molar mass of $H_{2}O=2(1)+16=18\text{ g/mol}$.

Mass $=\text{number of moles}\times \text{molar mass}$

Mass $=0.25\times 18=4.5\text{ g}$.

Answer: 4.5 g