A solution of potassium nitrate has a concentration of 25 g/dm3.
Calculate the mass of potassium nitrate dissolved in 400 cm3 of this solution.
Give the mass of potassium nitrate dissolved in 200 cm3 of the same solution.
40 exam-style questions on AQA GCSE Chemistry 3.2 Use of amount of substance in relation to masses of pure substances, covering 3.2.1 Moles, 3.2.2 Amounts of substances in equations, 3.2.3 Using moles to balance equations, 3.2.4 Limiting reactants, 3.2.5a Concentration of solutions, and 3.2.5b Relating mass, volume and concentration. Each one has a worked solution and a mark scheme showing where the marks go.