Question

Calcular a massa molar das substâncias: Dado as massas atômicas (g/mol) H = 1, N = 14, Cl = 35,5, O = 16.

a) HNO 2
b) NaCl
c) NaOH
d) HCl
e) NaClO 4

Answer 1

a) HNO2
1 + 14 + (2*16) = 47 g/mol

b)NaCl
23 + 35,5 = 58,5 g/mol

c)NaOH
23 + 16 + 1 = 40 g/mol

d) HCl
1 + 35,5 = 36,5 g/mol

e) NaClO4
23+ 35,5 + (4*16)
58,5 + 64 = 122,5 g/mol