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What mass of calcium carbonate would you need to react with dilute hydrochloric acid to produce 10 g calcium chloride?

Equation: CaCO₃ + 2HCl --> CaCl₂ + CO₂ + H₂O [Ca_40.1 C₁₂ O₁₆ Cl_35.5]ANSWER: 9.1 g

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