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2.6 Calculations involving masses

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Question 13
F

A compound has empirical formula CH2\mathrm{CH_{2}}CH2​ and relative molecular mass 56. What is its molecular formula?

[1]
A

CH2\mathrm{CH_{2}}CH2​

B

C4H8\mathrm{C_{4}H_{8}}C4​H8​

C

C3H6\mathrm{C_{3}H_{6}}C3​H6​

D

C2H4\mathrm{C_{2}H_{4}}C2​H4​

Markscheme

2.6 Calculations involving masses Questions

  1. GCSE
  2. /Chemistry
  3. /2.6 Calculations involving masses

55 exam-style questions on Edexcel GCSE Chemistry 2.6 Calculations involving masses, covering 2.6.1 Relative formula mass and percentage composition, 2.6.2 Empirical and molecular formulae, 2.6.3 Conservation of mass, 2.6.4 Reacting masses and concentration in g dm⁻³, 2.6.5 The mole and the Avogadro constant, and 2.6.6 Limiting reactants and stoichiometry. Each one has a worked solution and a mark scheme showing where the marks go.

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