How many atoms of carbon (C) are present in the reactants of the following chemical equation?

Question

C7H16+O2→CO2+H2O

(1 point)
Responses

1 atom
1 atom

7 atoms
7 atoms

23 atoms
23 atoms

16 atoms

Answer 1

In the given chemical equation:

\[ \text{C}7\text{H}{16} + \text{O}_2 \rightarrow \text{CO}_2 + \text{H}_2\text{O} \]

we can analyze the reactants to find the number of carbon atoms.

• In the reactant \( \text{C}7\text{H}{16} \), there are 7 carbon atoms.

The reactant \( O_2 \) does not contain any carbon atoms, so it does not contribute to the count.

Thus, the total number of carbon atoms in the reactants is:

7 atoms

So the correct response is:

7 atoms