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

23 atoms
23 atoms

16 atoms
16 atoms

7 atoms

Answer 1

In the given chemical equation:

\[ C_7H_{16} + O_2 \rightarrow CO_2 + H_2O \]

the reactants are \( C_7H_{16} \) (heptane) and \( O_2 \) (oxygen).

The molecular formula \( C_7H_{16} \) indicates that there are 7 carbon (C) atoms in the heptane molecule.

Thus, the number of atoms of carbon in the reactants is 7 atoms.

So, the correct response is: 7 atoms.