Question

2. How many grams of K3N are produced from 2.1 moles of Mg3N

Answer 1

K3N : Mg3N

1 : 1

X : 2,1

n(K3N) = 2,1 mol

M(K3N) = 39×3 + 32

= 149

m= nM

= 2,1 × 149

= 312,9g