Question

How many moles are in 25 grams of water?

Answer 1

Answer
1.389 mol
Explanation:
Moles = Mass divided by molar mass, where molar mass of $H_{2}O$1+1+16=18g/mol.
$n=\frac{m}{Mr}$
$=\frac{25}{18}$
$=1.389mol$