SAT II Chemistry : Balancing Equations

Study concepts, example questions & explanations for SAT II Chemistry

varsity tutors app store varsity tutors android store

Example Questions

Example Question #6 : Stoichiometry

When the equation for the reaction shown below is balanced with the lowest whole-number coefficients, what is the sum of the coefficients of the reactants?

___  ___  ___  ___

Possible Answers:

Correct answer:

Explanation:

The coefficients of the equation, when balanced, should be 2, 13, 10, and 8. This problem wants to know the sum of the reactants, so only the coefficients on the left side of the reactants should be added. The sum of 2 and 13 is 15, so 15 is the correct answer.

Learning Tools by Varsity Tutors

Incompatible Browser

Please upgrade or download one of the following browsers to use Instant Tutoring: