Question

Calcule a massa molecular
C2H5OH=
Ca3(PO4)2=
K4Fe(cn)6=

Answer 1

Resposta:

C2H5OH

massa molecular:

12×2+1×5+16+1=

24+5+16+1=46 g

Ca3(PO4)2

40×3+31×2+16×8=

120+62+128=310 g

K4Fe(CN)6

39×4+56+12×6+14×6=

156+56+72+84=368