chemistry

Stoichiometrics:
a 36 grams sample of calcium hydroxide is allowed to react with 40.5 grams of phosphoric acid according to the following reaction.

3Ca(OH)2 + 2H3PO4 = Ca3(PO4)2 + 6H2O

how many grams of calcium phosphate are produced?

how many moles of Calcium phosphate are produced?

how many moles of excess reagent remain?

if 43.5 grams of calcium phosphate are produced what is the % yield?

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