Question

What is the gram formula mass of `CuSO_4`?

Answer 1

The gram formula mass of `"CuSO"_4"` is `"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).

`"Cu":` `(1xx"63.546 g/mol")="63.546 g/mol"`

`"S":` `(1xx"32.065 g/mol")="32.06 g/mol"`

`"O":` `(4xx"15.999 g/mol")="63.996 g/mol"`

`"CuSO"_4":` `"63.546 g/mol"+"32.06 g/mol"+"63.996 g/mol"="159.60 g/mol"` (rounded to two decimal places)