10. Rumus molekul karbon dioksida berikut ini adalah __ A. CO_(2) D. CO_(3) B. C_(2)O C. C_(2)O_(2) E. C_(2)O_(3)

The correct answer is **A. **.Here's why:* **Carbon dioxide** is a compound made up of one carbon atom (C) and two oxygen atoms (O). * The subscript numbers in a chemical formula indicate the number of atoms of each element. * Therefore, the correct molecular formula for carbon dioxide is **CO₂**.