posted by yankoua .
A compound Y containing carbon,hydrogen and oxygen was burned in a stream of oxygen,the carbondioxide and water were cooled in a pre way absorption tube and carefully reweighed.Readings obtained were
initial mass of Y is 20.63mg
mass of carbondioxide produced 57.94mg
mass of water produced 11.85mg.
find the percentage of each element and hence the emperical formular of compound Y.
How much of this do you not understand? I don't want to spend my time going over material you already understand.