A sample contained a mixture of MgCO 3 and SrCO 3. The amount of MgCO 3 was determined by reacting 6.488 g of the sample with an excess of HCl to release CO 2 from each compound; MgCO 3(s) + 2 HCl(aq) → MgCl 2 + CO 2(g) SrCO 3(s) + 2 HCl(aq) → SrCl 2 + CO 2(g) If the sample reacted completely and produced 1549 mL of carbon dioxide at 25.28 °C and 709.8 mm Hg, what was the mass percentage of MgCO 3 in the mixture?

Q: Net ionic equation

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".