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Atoms and reactions

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Question 14

The mass of 5 molecules of a substance is 3.65 × 10-22 g. What is the possible formula of the substance? [Avogadro's constant, L=6.02×1023 mol−1L = 6.02 \times 10^{23}\text{ mol}^{-1}L=6.02×1023 mol−1]

A

CH4\text{CH}_4CH4​

B

N2\text{N}_2N2​

C

CO2\text{CO}_2CO2​

D

SO2\text{SO}_2SO2​

Markscheme

Atoms and reactions Questions

  1. A Level
  2. /Chemistry
  3. /Atoms and reactions

199 exam-style questions on OCR A A Level Chemistry Atoms and reactions, covering Atomic structure and isotopes, Compounds, formulae and equations, Amount of substance, Acids, and Redox. Each one has a worked solution and a mark scheme showing where the marks go.

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