Relative Masses and Moles

Relative Masses and Moles Quiz

Spec 4.3.1.2 · AQA GCSE Chemistry: Quiz

Studying this course? Keep your progress in one place.

Pick an answer for each. Quizzes never use energy.

5 questions, one answer each

Each answer is checked as you go, with why.

See all 5 questions

  1. 1. What is the relative formula mass (Mr) of a compound?

    • A. The mass of one atom of the compound
    • B. The sum of the relative atomic masses of all atoms shown in its formula
    • C. The number of moles in one gram of the compound
    • D. The mass of one mole in kilograms

  2. 2. What is the Avogadro constant?

    • A. 6.02 × 10²³ particles per mole
    • B. 1.00 × 10²³ particles per mole
    • C. 22.4 particles per mole
    • D. 6.02 particles per gram

  3. 3. What is the Mr of water, H2O (Ar: H = 1, O = 16)?

    • A. 17
    • B. 18
    • C. 16
    • D. 19

  4. 4. How many moles are there in 8 g of methane, CH4 (Mr = 16)?

    • A. 0.5 mol
    • B. 2 mol
    • C. 8 mol
    • D. 16 mol

  5. 5. In the reaction N2 + 3H2 → 2NH3, a student has 6 moles of hydrogen gas that react completely. How many moles of ammonia are produced, and what mass is this (Mr of NH3 = 17)?

    • A. 2 moles, 34 g
    • B. 4 moles, 68 g
    • C. 6 moles, 102 g
    • D. 3 moles, 51 g

Quiz