# Chemistry

A tablet containing calcium carbonate and fillers with a mass of 1.631 g was dissolved in HCl. After the fillers were filtered out, the HCl was neutralized by adding sodium carbonate. The resulting precipitate was pure calcium carbonate (with the fillers removed). The solid calcium carbonate was collected on a watch glass that had a mass of 46.719 g when empty. After the calcium carbonate had been allowed to dry, the mass of the watch glass plus product was found to be 47.623

1. Calculate the mass percent of calcium in calcium carbonate. Report your answer to at least 3 significant figures.

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1. Calculate dry wt of Calcium Carbonate without watch glass... Then, ratio [CaCO3(s) / tablet mass] x 100% => Wt% CaCO3
I get 55.4% w/w.

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