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2.6 Calculations involving masses

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Question 13

A gardener prepares a liquid feed for seedlings by dissolving 9.0 g of soluble plant nutrient in water. The final volume of the feed is 0.450 dm30.450\,\mathrm{dm^{3}}0.450dm3.

Calculate the mass of plant nutrient dissolved in each cubic decimetre of the feed. Give your answer in g dm−3\mathrm{g\,dm^{-3}}gdm−3.

Use the equation:

concentration (g dm−3)=mass of solute (g)volume of solution (dm3)\text{concentration }(\mathrm{g\,dm^{-3}})=\dfrac{\text{mass of solute (g)}}{\text{volume of solution }(\mathrm{dm^{3}})}concentration (gdm−3)=volume of solution (dm3)mass of solute (g)​

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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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