Question

3,0 mol de gas de nitriogenio N² calcule a massa desse gás N=14

Answer 1

Olá!:

Massa molar:

N₂ = 14 * 2 => 28 g/mol

Então:

1 mol N₂ ----------------- 28 g
3,0 mols ----------------- m

m = 3,0 * 28 / 1

m = 84 g