when water is added to solid calcium carbide, CaC2, acetylene gas, C2H2, and calcium hydroxide, Ca(OH)2 are produced.

Question

how many moles of acetylene are produced when 0.50 mole of calcium carbide reacts?

can anyone explain this to me please

Answer 1

First question answered below.
Second question: Look at the coefficients in the balanced equation. They tell you the ratio of the products to reactants and to each other.