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2.6 Calculations involving masses

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Question 8

A technician dissolves 9.6 g of potassium nitrate to make 0.40 dm3 of solution. What is the concentration of the solution?

[1]
A

3.8 g dm−33.8\ \mathrm{g\,dm}^{-3}3.8 gdm−3

B

24 000 g dm−324\,000\ \mathrm{g\,dm}^{-3}24000 gdm−3

C

24 g dm−324\ \mathrm{g\,dm}^{-3}24 gdm−3

D

0.042 g dm−30.042\ \mathrm{g\,dm}^{-3}0.042 gdm−3

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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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