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A 14.2 g sample of a mixture of magnesium carbonate and calcium carbonate is treated with...

A 14.2 g sample of a mixture of magnesium carbonate and calcium carbonate is treated with excess HCl. The resulting reaction produces 4.55 L of carbon dioxide gas at 28 °C and 675 torr.

Write a balanced chemical equation for the reaction that takes place between magnesium carbonate and HCl. Include physical states.

chemical reaction:

Write a balanced chemical equation for the reaction that takes place between calcium carbonate and HCl. Include physical states.

chemical reaction:

Calculate the total number of moles of carbon dioxide that forms from these reactions.

moles of carbon dioxide:

Assuming the reactions are complete, calculate the precentage by mass of magnesium carbonate and calcium carbonate in the mixture.

magnesium carbonate:

calcium carbonate:

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