Question

Calcule a Massa molecular dos compostos :
A)C12H22O6
B)Ca(NO3)2
C)Al2(SO4)3
D)FeCl3 X 6H2O
E )CH3OH
F)KmnO4
G)H3PO4

Answer 1

a) C12H22O6 = 12 x 12 + 1 x 22 + 16 x 6 = 262 g/mol

b) Ca(NO3)2 = 40  + 14 x 2 + 16 x 6 = 164 g/mol

c) Al2(SO4)3 = 27 x 2 + 32 x 3 + 16 x 12 = 342 g/mol

d) FeCl3 . 6H2O = 56 + 35,5 x 3 + 6 x 18 = 270,5 g/mol

e) CH3OH = 12 + 1 x 3 + 16 + 1 = 31 g/mol

f) KMnO4 = 39 + 55 + 16 x 4 = 158 g/mol

g) H3PO4 = 1 x 3 + 31 + 16 x 4 = 98 g/mol

espero ter ajudado!.