# How many moles are there in 30 grams of H_3PO_4?

Nov 13, 2015

$0 , 3061 m o l$

#### Explanation:

Moles = Mass / Molar mass.

$n = \frac{m}{M r}$

=(30g)/((1xx3)+31+(16xx4)

$= 0 , 3061 m o l$