Answer to Question #98968 in General Chemistry for Beverlie

Question

A 0.246 g piece of solid magnesium reacts with gaseous oxygen from the atmosphere to form solid magnesium oxide. In the laboratory a student weighs the mass of the magnesium oxide collected from this reaction as 0.304 g.
1. The 0.251 g solid magnesium is the
2. The 0.274 g magnesium oxide is the:
3. The gaseous oxygen is the:
4. What is the percent yield of this reaction?

Answer 1

1. limiting reagent
2. product of reaction
3. excess reagent
4. (0,304/0,403)*100%=75,43%