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JEE Main Chemistry question

ChemistrySome Basic Concepts of ChemistryJEE Main

2.4 g of a sample of magnesium when burnt in excess of O gives 3.84 g of magnesium oxide. The percentage purity of magnesium in the sample is %. [Molar mass of MgO = 40 g mol]

Answer: 96

Solution

Moles of MgO mol. Since Mg and MgO are in 1:1 ratio, moles of Mg

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Question ID VK-131139