Answer to Question #117685 in General Chemistry for joshua

Question

How many moles of calcium oxide can you form starting with 15 moles of calcium and 12 moles of oxygen? 2Ca + O2→ 2CaOa.7.5 moles Cab.12 mol O2c.15 mol CaOd.2 mol CaO

Answer 1

$2Ca + O_2→ 2CaO$

from the reaction we can see that calcium consumed will be twice the moles of oxygen consumed

calcium will be the limiting reagent here

stochimetric coefficient of calcium and calcium oxide is same hence mole of calcium consumed will be equal to the mole of calcium oxide produced

answer = 15 moles