Question

What is the molar mass of oxygen in one unit of FeSO4 ?
32.00
64.00
26.90

Answer 1

64

Step-by-step explanation:

oxygen molar mass is 16g and there are 4atoms of oxygen hence the product of the two is 64

Answer 2

64 g/mol

Step-by-step explanation:

In one molecule of FeSO4, we notice that we have 4 atoms

Hence, we can say that the molar mass of Oxygen in 1 unit/molecule of FeSO4 is 4 times the molar mass of Oxygen

Molar mass of Oxygen atom (O) = 16 g / mol

Molar mass of Oxygen in FeSO4 = 16 * 4 g / mol

Molar mass of Oxygen in FeSO4 = 64 g / mol