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

Question

C7H16+O2→CO2+H2O

(1 point)
Responses

23 atoms
23 atoms

16 atoms
16 atoms

1 atom
1 atom

7 atoms

Answer 1

To find the number of carbon (C) atoms in the reactants of the given chemical equation:

C7H16 + O2 → CO2 + H2O

We look at the reactants, which are C7H16 and O2.

In C7H16 (heptane), there are 7 carbon atoms. O2 does not contain any carbon.

Therefore, the total number of carbon atoms in the reactants is 7 (from C7H16).

The correct response is: 7 atoms.