Question

Qual a massa molar encontrada em 3 mols de NaOH . *
a) 40 gramas
b) 120 gramas
c) 8 gramas
d) 12 gramas
e) 6 gramas​

Answer 1

Resposta:

MM (NaOH) = 23 + 16 + 1 = 40 g/mol

1 mol de NaOH ---- 40 g de NaOH

3 mol de NaOH ---- n

n = 40 × 3

n= 120 g de NaOH