Question

What makes up the compound H2O?

Answer 1

2 hydrogen atoms bonded with 1 oxygen atom

Step-by-step explanation:

In the compound
`H_(2) O`, the number 2 after the H means that there are two atoms in the preceding letter (element), and since there are no numbers ofter the O, that means there is only 1 atom.

Answer 2

The compound H2O (water) can be made up of two hydrogen atoms and one oxygen atom.