Lessons

Eamcet Chemistry
1st Year : Unit 1.4 (Basics & Concepts) - Stoichiometric Calculations

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Q.

What weight of Oxygen required for the complete combustion of 2.4 grams of Mg?

View Answer

Correct choice: C

Explanation:

The balanced equation for the combustion of magnesium metal is
2Mg + O2 → 2MgO
2 moles of Mg = 1 mole of O2
2X24gm of Mg = 32gm of O2
2.4 grams of Mg= (2.4X32/2X24)= 1.6grams of O2
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