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2.6 Calculations involving masses

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Question 1

A technician needs to prepare 250 cm3 of potassium chloride solution with a concentration of 30.0 g dm−330.0\,\mathrm{g\,dm^{-3}}30.0gdm−3.

Calculate the mass of potassium chloride that the technician must dissolve.

[2]
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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