alleryThe number of moles present in 18 g of water is
A0.5 mol
B1 mol
C2 mol
D18 mol
Answer & Solution
Correct answer: B. 1 mol
Number of moles $= \dfrac{\text{mass}}{\text{molar mass}}$.
For water, molar mass $= 18\,g\,mol^{-1}$, so moles $= \dfrac{18}{18}=1$ mol.
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