Na2CO3 (s) +2 HCl (aq) ---> 2 NaCl (aq) +H2O (l) +CO2(g) Molarity of HCL is 1.00mol/l Trial 2 info: Mass of test tube, stones and beaker: 96.446g Mass of test tube, stones, beaker and Na2CO3: 97.261g Mass of Na2CO3 used: 0.815g Volume of HCl used: 9.95 Mass of residue, test tube, stones and beaker: 97.44 g !!So my question is what is the mass residue of (NaCl) ( subtract mass of test tube, stones and beaker) !!

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".