Question

how many moles of calcium will be made if 3,86 moles of potassium reacts with excess calcium nitride?

Answer 1

According to reaction below, when calcium nitride reacts with 6 moles of potassium, 3 moles of calcium is produced.& Thus, 0.5 * 3.86 moles& = 1.93 moles of calcium will be made if 3.86 moles of potassium reacts with excess calcium nitride.
Ca3N2 + 6 K = 3 Ca + 2 K3N
Answer:& 1.93 moles of calcium.