Here's how to figure out the number of atoms in pyruvic acid:

1. Chemical Formula:

Pyruvic acid has the chemical formula C₃H₄O₃.

2. Counting Atoms:

* Carbon (C): 3 atoms

* Hydrogen (H): 4 atoms

* Oxygen (O): 3 atoms

3. Total Atoms: 3 + 4 + 3 = 10 atoms

Therefore, pyruvic acid has a total of 10 atoms.