c2h5oh + 3o2 → 2co2 + 3h2o\n11. the reactant side of this chemical equation has a total of ___ atoms.\n12…

c2h5oh + 3o2 → 2co2 + 3h2o\n11. the reactant side of this chemical equation has a total of ___ atoms.\n12. there are a total of ___ oxygen atoms in this chemical equation.\n13. carbon dioxide has a total number of ___ atoms.

c2h5oh + 3o2 → 2co2 + 3h2o\n11. the reactant side of this chemical equation has a total of ___ atoms.\n12. there are a total of ___ oxygen atoms in this chemical equation.\n13. carbon dioxide has a total number of ___ atoms.

Answer

Answer:

  1. 9
  2. 7
  3. 3

Explanation:

Step1: Analyze reactant side atoms

For the reactant side of the equation $C_2H_5OH + 3O_2\rightarrow2CO_2+3H_2O$, in $C_2H_5OH$, there is 1 oxygen atom, and in $3O_2$ there are $3\times2 = 6$ oxygen atoms. So the total number of atoms on the reactant side is $1 + 6=7$ oxygen - containing species, but we count atoms: 1 (from $C_2H_5OH$) + 6 (from $O_2$) = 9 atoms.

Step2: Analyze oxygen atoms in the equation

In the products, in $2CO_2$ there are $2\times2 = 4$ oxygen atoms and in $3H_2O$ there are 3 oxygen atoms. So the total number of oxygen atoms in the equation is $4 + 3=7$.

Step3: Analyze carbon - dioxide atoms

In $2CO_2$, the total number of atoms in one $CO_2$ molecule is 3 (1 carbon and 2 oxygen), so for carbon - dioxide as a whole in the equation, considering the coefficient 2, but just asking for number of atoms in one $CO_2$ unit, it has 3 atoms.