Răspuns:
MC6H12O6=6×12+12×1+6×16=180g/mol
180gC6H12O6..........72gC.......12gH..........96gO
100gC6H12O6...........xgC..........ygH...............zgO
x=100×72/180=40%C
y=100×12/180=6,67%H
z=100×96/182=53,33%O
Explicație:
