22.4 l CO2 ..........12 g C
0,224 l CO2 .........x g C
X = 0.12G
18 g H2O - 2 g H
0.18 g H2O - X
X = 0.02
masa oxigen = 0.30-0.12-0.02 = 0.16 g
calculezi rapoartele atomice
0.12/12 = 0.1
0.2/0.1 = 0.2
0.16/16 = 0.1
Imparti valorile la 0,1 (fiind cea mai mica valoare) =>CH2O
Calculezi rapoartele de masa
12/30 * 100 = 40% C
16/30 = 53.33% O
2/30 = 6.666 % H
Raspuns corect - B