Problem- 1) Which has a higher mass percent of magnesium, MgO or Mg3N2? Answer: Mg3N2
2) If the formation of magnesium nitride is not taken into account and the gray residue after the initial heating is assumed to be wholly magnesium oxide, the experiment would take mush less time. Based on your answer to question 1, would this assumption cause the measured % yield to be higher or lower than it should be?
Using textbook reference solve the reactions given in above problem