Question

consider the incomplete chemical equation. co₂(g) + h₂o(l) →? assuming the reactants are balanced and we start with 5 carbon dioxide molecules and 10 water molecules, how many oxygen atoms would you expect to find in the products? a 10 oxygen atoms b 15 oxygen atoms c 20 oxygen atoms d 25 oxygen atoms

Explanation:

Step1: Count O in CO₂

Each CO₂ has 2 O atoms. With 5 CO₂, number of O atoms is $5\times2 = 10$.

Step2: Count O in H₂O

Each H₂O has 1 O atom. With 10 H₂O, number of O atoms is $10\times1=10$.

Step3: Total O atoms

Total O atoms in reactants (and by conservation in products) is $10 + 10=20$.

Answer:

C. 20 oxygen atoms