Question

How many moles of `MgCl_2` are there in 309 g of the compound?

Answer 1

3.2488 moles

Explanation:

1 Molecule of MgCl2 = 95.11
1 Mole in 1 molecule of MgCl2 is `1/95.11` = 0.010514
Or Total moles in 309 gm of MgCl2 is #0.010514*309 = 3.2488
Answer is 3.2488 moles