# How many molecules are in 17 amu of ammonia, NH_3?

##### 1 Answer
Jun 25, 2016

Well the mass of $1$ $\text{ammonia molecule}$ $=$ $\left(3 \times 1 + 14\right) \cdot \text{amu}$, so perhaps you could tell us? And from where did I get those numbers?

#### Explanation:

And what is the mass of $1$ $\text{mole of ammonia}$? How do we get from $\text{amu}$ to $\text{grams}$?