Question

how many total atoms are in a carbon dioxide molecule? hint: the spheres in the model represent atoms.

Explanation:

Step1: Recall chemical formula

The chemical formula of carbon - dioxide is $CO_{2}$.

Step2: Count atoms

In $CO_{2}$, there is 1 carbon atom and 2 oxygen atoms. So the total number of atoms is $1 + 2=3$.

Answer:

3