MDCAT Chemistry MCQ #2825

What is the mass percent of carbon in CO2? (C = 12, O = 16)

MDCAT Chemistry MCQ #2825

  1. Question 1

    Q1. What is the mass percent of carbon in CO2? (C = 12, O = 16)

    • A) 27.27%
    • B) 33.00%
    • C) 44.00%
    • D) 25.00%

    Answer: 27.27%

    Explanation: Mass percent = (12/44) × 100 = 27.27%. Option B adds O2 mass instead of CO2.