MDCAT Chemistry MCQ #4540

A researcher needs 100g of benzene to synthesize a new compound. How many moles of benzene (C6H6) are needed?

MDCAT Chemistry MCQ #4540

  1. Question 1

    Q1. A researcher needs 100g of benzene to synthesize a new compound. How many moles of benzene (C6H6) are needed?

    • A) 1.6 moles
    • B) 2.0 moles
    • C) 2.5 moles
    • D) 3.0 moles

    Answer: 2.0 moles

    Explanation: Molar mass of C6H6 is 78 g/mol; hence 100g / 78 g/mol = 1.28 mol, rounded to 1.3 moles. Option B is the closest.