what is the chemical formula for this molecule? complete the formula below: c h

what is the chemical formula for this molecule? complete the formula below: c h
Answer
Explanation:
Step1: Count carbon atoms
Count the dark - colored (C) spheres. There are 3 carbon atoms.
Step2: Count hydrogen atoms
Count the light - colored (H) spheres. There are 8 hydrogen atoms.
Answer:
$C_3H_8$