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For the reaction CaCO3(s)+ 2HCl(aq)= CaCl2(aq)+ CO2(g)+ H2O(l) how many grams of CaCl2 can be obtained if 14.6 g HCl is allowed in CaCO3?

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Do you mean is 14.6 g CaCO3 is formed?
mols HCl = grams/molar mass
Convert mols HCl to mols CaCl2.
Convert mols CaCl2 to grams. g = mols x molar mass.

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