To determine the number of carbon (C) atoms in the reactants of the given chemical equation:
\[ 2C_6H_{10} + 17O_2 \]
We can analyze the reactants:
- The compound \(C_6H_{10}\) contains 6 carbon atoms. Since there are 2 molecules of \(C_6H_{10}\), we can calculate the total number of carbon atoms as follows:
\[ \text{Number of carbon atoms from } C_6H_{10} = 2 \times 6 = 12 \text{ carbon atoms} \]
The other reactant, \(O_2\), does not contain any carbon atoms.
Therefore, the total number of carbon atoms in the reactants is 12.
The correct answer is: 12 atoms