2Mg + O2 =2MgO How Many Moles Of Magnesium Are Needed To React With 16 G Of O2?

The molar mass of O2 molecule is 32 grams. The moles of O2 in 16 grams is;

moles= mass/ molar mass

moles= 16 g/ 32 g

moles= 16/32

moles= 1/2

2Mg + O2 =2MgO

For half mole of oxygen molecule

2/2Mg + 1/2O2 = 2/2 MgO

Mg + 1/2 O2 = MgO

One mole of magnesium is required to react with 16 grams of O2.