aldehida formica formula H2CO
masa moleculara este 2x1+12+16 egal 30
30 g aldehida formica......2g H....12g C.....16gO
100 g aldehida formica.....xgH.....ygC.......zgO
X egal 7.67 la suta H
y egal 40 la suta C
z egal 53.33 la suta O
formula metanol CH3OH
masa moleculara este 12+1x3+16+1 egal 32
32 g metanol .....12g C....4gH.....16gO
100 g metanol.....xgC.....ygH........zgO
X egal 37.5 la suta C
y egal 12.5 la suta H
z egal 50 la suta O
