Final answer:
The relative formula mass of iron sulfate (FeSO4) is 151.92, which rounds to 152 when given to the nearest whole number.
Step-by-step explanation:
The relative formula mass of iron sulfate (FeSO4) can be calculated by adding up the atomic masses of the elements present in the compound. The atomic mass of iron (Fe) is approximately 55.85 g/mol, the atomic mass of sulfur (S) is approximately 32.06 g/mol, and the atomic mass of oxygen (O) is approximately 16.00 g/mol. Therefore, the relative formula mass of iron sulfate is:
(55.85 + 32.06 + (4 * 16.00)) g/mol = 151.95 g/mol)
Rounding to the nearest whole number, the relative formula mass of iron sulfate is 152 g/mol.