Question

How many moles of magnesium oxide are formed when 4 moles of magnesium react with oxygen in the reaction `2Mg + O_2 -> 2MgO`?

Answer 1

4 mol MgO

Explanation:

Let us first look at the equation. As per the equation , 2 moles of Magnesium produces two moles of MgO . If we double the amount of Magnesium , it will also double the amount of MgO we will obtain.

2 Moles of Mg produces 2 moles of MgO

4 Moles of Mg will produce X moles of MgO

2 Mole Mg / 4 Mole Mg = 2 moles of MgO/ X moles of MgO

1/ 2 = 2/X

1.X = 2.2

X = 4