# What is the gram formula mass of CuSO_4?

Dec 18, 2016

The gram formula mass of $\text{CuSO"_4}$ is $\text{159.60 g/mol}$

#### Explanation:

Multiply the subscript for each element by its molar mass (atomic mass on periodic table in g/mol). Then add the results. This will give you the molar mass of the compound (mass of 1 mole).

$\text{Cu} :$(1xx"63.546 g/mol")="63.546 g/mol"

$\text{S} :$(1xx"32.065 g/mol")="32.06 g/mol"

$\text{O} :$(4xx"15.999 g/mol")="63.996 g/mol"

$\text{CuSO"_4} :$$\text{63.546 g/mol"+"32.06 g/mol"+"63.996 g/mol"="159.60 g/mol}$ (rounded to two decimal places)