problem 3.

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.

2 answers

How much of this do you not understand? I don't want to spend my time going over material you already understand.
I don’t know the answer,I need it to be answered please