# How many moles of water are in 0.34g of water?

##### 1 Answer
Aug 15, 2016

$\text{Number of moles}$ $=$ $\text{Mass"/"Molar mass}$ $\cong$ $0.02 \cdot m o l$

#### Explanation:

And thus, $\frac{0.34 \cdot \cancel{g}}{18.01 \cdot \cancel{g} \cdot m o {l}^{-} 1}$ $=$ (??)/(mol^-1) $=$ ??mol

Note that all I have done here is set up the problem dimensionally. I want an answer in moles, and it seems I got an answer in moles, which makes me think that I have done it right. How many water molecules in such a quantity?