The reaction of nitric acid with calcium carbonate produces calcium nitrate, carbon dioxide, and water. Determine the correct balanced equation for this reaction.   Question 1 options:   2HNO3(aq) + CaCO3(s) → CaNO3(aq) + CO2(g) + H2O(l)   HNO3(aq) + CaCO3(s) → Ca(NO3)2(aq) + CO2(g) + H2O(l)   2HNO3(aq) + CaCO3(s) → Ca(NO3)2(aq) + CO2(g) + H2O(l)   2HNO3(aq) + 2CaCO3(s) → 2Ca(NO3)2(aq) + 2CO2(g) + 2H2O(l)   HNO3(aq) + CaCO3(s) → CaNO3(aq) + CO2(g) + H2O(l)   Question 2    A compound contains only nitrogen and oxygen. Determine the empirical formula of the compound if a sample is found to contain 46.67 % nitrogen by mass.   Question 2 options:   N22   N2O5   N   NO   N2O   Question 3 Determine the moles of CaCO3 in 275 g of CaCO3.   Question 3 options:   0.364   4.57 × 10–22   2.75   275   none of these are reasonable

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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".