Question

qual a massa de 3 mols de HNO3?

Answer 1

Olá.

• H = 1 g/mol
• N = 14 g/mol
• O = 16 g/mol

HNO3: 1 + 14 + 3 x 16 = 15 + 48 = 63 g/mol

1 mol - 63
3 mol - x

x = 63.3
x = 129g

Bons estudos.