CO2(dioxid de carbon)
raport de masa=12:32=6:16=3:8
44g CO2..........12g C..........32g O
100g CO2........X g C..........Y g O
=>X=27,27% C. Y=72,73% O
H2SO4(acid sulfuric)
raport de masa=2:32:64=1:16:32
98g H2SO4..........2g H..........32g S.........64g O
100g H2SO4.........X g H.........Y g S..........Z g O
=>X=2,04% H. Y=32,65% S. Z=65,31% O
