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2.6 Calculations involving masses

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Question 4

A gas-treatment vessel contains 14.0 g of carbon monoxide and 12.8 g of oxygen.

2CO+O2→2CO2\mathrm{2CO + O_{2} \rightarrow 2CO_{2}}2CO+O2​→2CO2​

Relative atomic masses: C=12\mathrm{C} = 12C=12, O=16\mathrm{O} = 16O=16.

What is the maximum mass of carbon dioxide that can form?

[1]
A

35.2 g35.2\,\mathrm{g}35.2g

B

11.0 g11.0\,\mathrm{g}11.0g

C

22.0 g22.0\,\mathrm{g}22.0g

D

14.0 g14.0\,\mathrm{g}14.0g

Markscheme

2.6 Calculations involving masses Questions

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

142 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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