Question

1. physical science the relationship between the numbers of oxygen atoms and hydrogen atoms in water

oxygen atoms 2 5 120
hydrogen atoms 4 34

Explanation:

Step1: Recall water's chemical formula

The chemical formula of water is $H_2O$. This means for every 1 oxygen atom, there are 2 hydrogen atoms.

Step2: Calculate hydrogen atoms for given oxygen atoms

When there are 2 oxygen atoms, the number of hydrogen atoms is $2\times2 = 4$. When there are 5 oxygen atoms, the number of hydrogen atoms is $5\times2=10$. When there are 17 oxygen atoms (since $34\div2 = 17$), the number of oxygen atoms is 17. When there are 120 oxygen atoms, the number of hydrogen atoms is $120\times2 = 240$.

Answer:

Oxygen atoms	2	5	17	120