Can some one please help answer this

Question

How many moles of Zinc sulfate, ZnSO₄, are present in 47.3 g of Zinc sulfate?

___________moles

Answer 1

Janet,

To convert from mass to moles, we divide by the molar mass of the substance. The molar mass is calculated by using the atomic mass of each element on the periodic table, along with the number that corresponds in the formula.

E.g., Molar mass of ZnSO₄ = (1 x Zn) + (1 x S) + (4 x O) = 161.47 g/mol

47.3 g x 1 mol/161.47 g = 0.293 moles