# chemistry

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If I react 500.0 grams of calcium carbonate with EXCESS Hydrogen Chloride, what mass of products will be produced?

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I assume you meant hydrochloric acid or aqueous hydrogen chloride (hydrogen chloride is a gas and there would be little to no reaction between the gas and solid CaCO3).
Here is a step by step. Print this out so you can keep it. It will work all of your stoichiometry problems and with a little gimmickry it will do limiting reagent problems.
Write and balance the equation.
CaCO3 + 2HCl ==>CaCl2 + H2O + CO2

Convert 500g CaCO3 to mols. mols = g/molar mass.

Using the coefficients in the balanced equation, convert mols CaCO3 to mols CaCl2.

Now convert mols CaCl2 to g. grams = mols x molar mass.

The problems asks for productS; follow the same procedure for H2O and CO2.

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