Stoichiometry of a Precipitation Reaction lab Homework Help

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Exercise 1: Stoichiometry and a Precipitation Reaction
Data Table 1.​ Stoichiometry Values.
A perfect percent yield would be 100%. Based on your results, describe your degree of accuracy
and suggest possible sources of error
What impact would adding twice as much Na​ 2​ CO​ 3​ than required for stoichiometric quantities
have on the quantity of product produced?
Determine the quantity (g) of pure CaCl​ 2​ in 7.5 g of CaCl​ 2​ •9H​ 2​ O
Determine the quantity (g) of pure MgSO​ 4​ in 2.4 g of MgSO​ 4​ •7H​ 2​ O
Conservation of mass was discussed in the background. Describe how conservation of mass
(actual, not theoretical) could be checked in the experiment performed.