Part a
1 mol CaCN2 require = 3 mol of H2O
80 g CaCN2 require = 3 x 18 = 54 g of H2O
72 g CaCN2 require = 54 x 72/80 = 48.6 g of H2O
Part b
1 mol CaCN2 require to produce = 2 mol of NH3
80 g CaCN2 require to produce = 2 x 17 = 34 g of NH3
5.19 g CaCN2 require to produce = 34 x 5.19/80 = 2.206 g of NH3
Part c
3 mol H2O require to produce = 1 mol of CaCO3
54 g of H2O require to produce = 100 g of CaCO3
151 g of H2O require to produce = 100 x 151/54 = 279.63 = 280 g of CaCO3
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