What Is the Percentage of Calcium in an Ionic Compound

question 106

Multiple Choice

What is the percentage of calcium in an ionic compound if a 1.23 g sample completely dissolves in water and yields 0.893 g of calcium carbonate upon addition of excess sodium carbonate solution?

• A) 34.2%
• B) 29.1%
• C) 12.4%
• D) 9.11%
• E) none of these

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