Question

Calcule as massas moleculares .
A- K2SO4
B- C2H6O
C- H3PO4
D- Ca3(PO4)2

Answer 1

a) K₂SO₄ = 39 x 2 + 32 + 16 x 4 = 174 g/mol

b) C₂H₆O = 12 x 2 + 1 x 6 + 16 = 46 g/mol 

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

d) Ca₃(PO₄)₂= 40 x 3 + 31 x 2 + 16 x 8 = 310 g/mol

espero ter ajudado!