New Jersey NJSLA Science Grade 11 Practice Questions - New Jersey Student Learning Assessments - Science Grade 11 Exam

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Methane burns in oxygen by the reaction CH4 + 2 O2 → CO2 + 2 H2O. When 4 molecules of CH4 react with 6 molecules of O2, which reactant limits the amount of CO2 produced, and how many CO2 molecules form?

Oxygen is limiting; 3 molecules of CO2 form. Methane is limiting; 4 molecules of CO2 form. Oxygen is limiting; 6 molecules of CO2 form. Both are consumed completely; 5 molecules of CO2 form.

Correct Answer:

Oxygen is limiting; 3 molecules of CO2 form.

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