Question

Magnesium and oxygen combine in the ratio of 3:2 by mass to form magnesium oxide. What mass oxygen

gas would be required to react completely white 24g of magnesium? ​

Answer 1

Answer:

Mg9+O→MgO

Let mass of Mg be 3x

then mass of O be 2x

no. of moles in 24 kg of Mg=  

24

24

​  

=1mole

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.

Explanation:

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