Sodium carbonate (Na2CO3) and calcium chloride (CaCl2) react to form sodium chloride (NaCl) and calcium carbonate (CaCO3) according to the following equation: Na2CO3 + CaCl2→ 2NaCl + CaCO3

How many moles of Na2CO3 would you need to react with 3 mole of CaCl2?

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)