Question

me ajudem por favoorr Exercício de fixação
Calcule as massas moleculares dos seguintes compostos:
a)O2:
b)NaOH:
c)H3PO4:
d)CaCO3:
e)CO2:
f)H2O:
g)Aℓ2(SO4)3:
h)Mg(NO3)2:
i)CH3CH2OH:​

Answer 1

Resposta:

A) O=16/ 2x16=32

B) Na=23, O=16, H=1/ 23+16+1=40

C) H=1, P=31, O=16/ 3x1+31+4x16=98

D) Ca=40, C=12, O=16/ 40+12+3x16=100

E) C=12, O=16/ 12+2x16=44

F) H=1, O=16/ 2x1+16=18

G) Al= 27, S=32 O=16/ 27x2+(32+4x16)x3 = 342

H)Mg= 24, N=14, O=16/ 24+(14+3x16)x2= 138

I) C= 12, H=1, O= 16/ 2x12+6x1+16= 46