Question

Magnesium and nitrogen react in a combination reaction to produce magnesium nitride: 3 Mg + N2 → Mg3N2 In a particular experiment, a 9.27-g sample of N2 reacts completely. The mass of Mg consumed is __________ g.

Answer 1

Answer:

The mass of Mg consumed is 23.76 g.

Explanation:

Magnesium and nitrogen react as : three moles of magnesium reacts with one mole of nitrogen to give one mole of magnesium nitride.

as given that the mass of nitrogen reacted = 9.27 g

moles of nitrogen reacted = $\frac{mass}{molarmass}=\frac{9.27}{28}=0.33$

Thus moles of magnesium reacted = 3 X 0.33 = 0.99 moles

mass of Mg reacted = moles X atomic mass = 0.99 X 24 = 23.76 grams