Question

magnesium and oxygen combine in ratio 3 ratio 2 by mass to form magnesium oxide what mass of Oxygen gas would be required to react completely with 24 gram of magnesium

Answer 1

Explanation:

Mg9+O→MgO

Let mass of Mg be 3x

then mass of O be 2x

no. of moles in 24 kg of Mg=

24 = 1 mole

24

as 1mole of Mg react with 1 mole of O

So, 1 mole of O is required ti react completely with 24 g of Mg

1 mole of O has 16 g mass

Thus 16 g of O is required to read completely with 24 of Mg.