Question

how many atoms of carbon (c) are present in the reactants of the following chemical equation?
$c_{7}h_{16}+o_{2}\
ightarrow co_{2}+h_{2}o$
(1 point)
23 atoms
16 atoms
7 atoms
1 atom

Explanation:

Step1: Identify reactants

The reactants are $C_7H_{16}$ and $O_2$.

Step2: Count carbon atoms in reactant

In $C_7H_{16}$, the sub - script of C is 7. So there are 7 carbon atoms in the reactants.

Answer:

7 atoms