Question

Ferrous(II) sulfate (FeSO₄) has how many moles of ferrous ion?

A) 1 mole
B) 2 moles
C) 3 moles
D) 4 moles

Answer 1

One mole of Ferrous(II) sulfate (FeSO4) contains one mole of ferrous ions, hence the answer is A) 1 mole.

Step-by-step explanation:

The question asks how many moles of ferrous ion are present in ferrous(II) sulfate (FeSO4). The formula FeSO4 indicates that for each formula unit, there is one ferrous ion (Fe2+). Therefore, in one mole of FeSO4, there is exactly one mole of ferrous ions. Thus, the correct answer is A) 1 mole.