Question

Calcule a massa molecular das moléculas abaixo :
a) CH4

b) C2H6

c) H6SO4

d) Ca3Fe(CN)6

e) Al2(SO4)3,

Dados : C =12, H =1, S = 32, O = 16, Ca = 40, Fe = 56, N = 14, Al = 27​

Answer 1

a) CH4

12×1=12

4×1=4

12+4=16u

b) C2H6

12×2=24

6×1=6

24+6=30u

c) H6SO4

6×1=6

32×1 =32

16×4=64

6+32+64=102u

d) Ca3Fe(CN)6

40×3=120

56×1=56

12×6=72

14×6=84

120+56+72+84=332u

e) Al2(SO4)3

27×2=54

32×3=96

16×12=192

54+96+192=342u