Question

2C6H14 + 19O2 → 12CO2 + 14H2O How many atoms, total, are reacting in this equation?

Answer 1

Answer is: seventy eight (78) atoms in this reaction.
In this balanced chemical reaction there are twelve carbon atoms (from two molecules of C₆H₁₄), twenty eight atoms of hydrogen (from two molecules of C₆H₁₄) and thirty eight atoms of oxygen (from nineteen molecules of oxygen):
12C + 28H + 38O = 78 atoms total.

Answer 2

Answer : The total number of atoms reacting in this equation are 78

Explanation :

The given balanced chemical reaction is,

$2C_6H_{14}+19O_2\rightarrow 12CO_2+14H_2O$

Balanced chemical reaction is the reaction in which the number of atoms of an individual elements present on reactant side must be equal to the product side.

The species present on the left side of the right arrow is the reactant and the species present on the right side of the right arrow is the product.

In the given balanced reaction,

$C_6H_{14}$ and $O_2$ are reactants.

$CO_2$ and $H_2O$ are products.

In $2C_6H_{14}+19O_2$, there are 12 atoms of carbon, 28 atoms of hydrogen and 38 atoms of oxygen.

The total number of atoms = 12 + 28 + 38 = 78

Hence, the total number of atoms reacting in this equation are 78