Balancing Chemical Equations

What is the initial count of sulfur atoms on the reactant side of the equation S8 + O2 → SO2?

• 1

• 2

• 8

• 16

When balancing chemical equations, which part of a chemical formula can be changed?

• Subscripts

• Coefficients

• Element symbols

• The overall molecular structure

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To balance the equation S8 + O2 → SO2, what coefficient should be placed in front of O2?

• 1

• 2

• 8

• 16

After placing a coefficient of 2 in front of H2O in the equation H2 + O2 → H2O, how many hydrogen atoms are on the product side?

• 1

• 2

• 3

• 4