Question

Calcule as massas moleculares dos seguintes compostos:
a. H 2 O
b. NaOH
c. H 2 SO 4
d. NaCl

Answer 1

Resposta:

$a) H_{2}O \\\\H = 1\\O = 16\\2.1+16\\2+16=18 g/mol\\\\b) NaOH\\Na= 23 \\ \\O=16\\H=1\\23+16+1= 40 g/mol\\\\c) H_{2}SO_{4} \\H = 2.1=2\\S=32\\O=4.16=64\\2+32+64= 98 g/mol\\\\d) NaCl\\Na=23\\Cl=35,5\\23+35,5 = 58,5 g/mol$

Explicação: