2Mg + O2 = 2MgO. Magnesium is the limiting reactant if 2.5g of magnesium is reacted how much magnesium oxide is made ?

The answer for the following problem is mentioned below.

Explanation:

Given:

mass of magnesium = 2.5 grams

We know;

molar mass of magnesium (Mg) = 24 grams

molar mass of magnesium oxide (MgO) =24 +16 = 40 grams

2Mg    +   O2     →   2MgO

2×24                        2×40

If;

      2×24 grams of Mg    →     2×40 grams of MgO

Then;

       2.5 grams of Mg      →       ?

      =  (2×40 × 2.5 ) ÷   2×24

      = 4.16 grams

Therefore; if 2.5g of magnesium is reacted then 4.16 grams of magnesium oxide is reacted.

So therefore 4.16 grams of magnesium oxide is made.

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