AnswersIA-Chemistry A Survey of Chemistry AWriting and Balancing Chemical EquationsQuestion 4
4
AssignmentMultiple Choice

Writing and Balancing Chemical Equations

Question 4 • IA-Chemistry A Survey of Chemistry A

Propane burns in oxygen to produce carbon dioxide and water. What are the chemical formulas of the reactants and products?

Answer
A
The formulas of the reactants are C3H8, O, and CO2. The formula of the product is H2O.
B
The formulas of the reactants are C3H8 and O2. The formulas of the products are CO and H2O.
C
The formulas of the reactants are C3H8 and O2. The formulas of the products are CO2 and H2O.

Explanation

Propane has the formula C3H8, and oxygen gas is O2, so these are the reactants. The question states that burning propane produces carbon dioxide, CO2, and water, H2O. Therefore, choice C correctly names both reactants and products.

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