Homework Help: chemistry

Posted by Sheree' on Sunday, November 11, 2012 at 8:01pm.

CaCO3(s) + 2 HCl(aq) --> CaCl3(aq) + H2O(l) + CO2

It takes 19.26 mL of 0.6721 M HCl to completely react with the CaCO3. What is the mass of CaCO3 in the tablet?
didnt mean to cal you

chemistry - DrBob222, Sunday, November 11, 2012 at 9:30pm
First correct the formula for calcium chloride to CaCl2.
mols HCl required = M x L = ?
mols CaCO3 = 1/2 that from the coefficients.
grams CaCO3 = mols CaCO3 x molar mass CaCO3

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