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JEE Main Chemistry question

ChemistrySome Basic Concepts of ChemistryJEE Main

How many of the following, contains in the mass of 1 g of CaCO? (1) 0.01 moles of CaCO (2) 0.01 mole of Ca (3) ions of CO (4) 0.02 g equivalents of CaCO

Answer: 4

Solution

Molar mass of CaCO g/mol, so 1 g mol, confirming (1). This gives 0.01 mol of Ca ions (one Ca per formula unit), confirming (2), and 0.01 mol of CO ions

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Question ID VK-131118