Skip to content

Course home

Sign up

Atoms and reactions

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137
Question 105

An environmental chemist isolates a sample of an acid rain precursor gas. The mass of 8 molecules of this gas is 8.52 × 10-22 g. What is the possible formula of this gas?

[Avogadro's constant, L=6.02×1023 mol−1L = 6.02 \times 10^{23}\text{ mol}^{-1}L=6.02×1023 mol−1]

A

O3\text{O}_3O3​

B

SO2\text{SO}_2SO2​

C

SO3\text{SO}_3SO3​

D

CH3Cl\text{CH}_3\text{Cl}CH3​Cl

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.

Question bank