# What is the molar mass of ammonium sulfate?

Aug 18, 2016

Approx. $130 \cdot g \cdot m o {l}^{-} 1$.

#### Explanation:

How did I get such a number?

$\left\{2 \times 14.01 + 8 \times 1.00794 + 32.06 + 4 \times 15.999\right\} \cdot g \cdot m o {l}^{-} 1$.

What is the relationship of this expression to ${\left(N {H}_{4}\right)}_{2} S {O}_{4}$?

This is commonly used as an agricultural fertilizer. Why?