Could someone help me please?

2,4,2

Explanation:

by looking at the subscripts (small number behind the element) you can tell how many of these atoms are presented in the compound.

your compound is C2H4O2

so there are two carbon atoms present, four hydrogen atoms present, and 2 oxygen atoms present.

hope this helps :)

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

your answer would be “dry”