Given 115 grams of Na2SO4 find:

a. the # of moles in sodium sulfate
b. the # of moles in sodium ions

Please explain all work and fully explain where each # came from. Thanks.

1 answer

2Na + SO4 -> Na2SO4
-first convert the 115 grams of Na2SO4 to moles by dividing by its molar mass
-next use the mole ratio (i.e. the coefficients of the reactants and product)