Question 1
Magnesium burns in air with a dazzling brilliance to produce magnesium oxide:
2Mg(
s) + O
2(
g) → 2MgO(
s)
When 6.00 g of magnesium burns, what is the theoretical yield of magnesium oxide?
◦ 19.9 g
◦ 0.247 g
◦ 6.00 g
◦ 9.95 g
◦ 4.97 g
Question 2
How many moles of CuO can be produced from 0.900 mol of Cu
2O in the following reaction?
2Cu
2O(
s) + O
2(
g) → 4CuO(
s)
◦ 1.80 mol
◦ 0.900 mol
◦ 3.60 mol
◦ 0.450 mol