A technician dissolves 9.00 g of compound X in water and makes the solution up to 250 cm3. The relative formula mass, MrM_rMr, of X is 180.
Calculate the concentration of compound X in the solution in mol dm−3\mathrm{mol\,dm^{-3}}moldm−3.
151 exam-style questions on Edexcel GCSE Chemistry 6.2 Quantitative analysis, covering 6.2.1 Concentration in mol dm⁻³ and titration calculations, 6.2.2 Percentage yield and why actual yield falls short, 6.2.3 Atom economy of a reaction, 6.2.4 Choosing a reaction pathway, and 6.2.5 Molar volume of gases and Avogadro's law. Each one has a worked solution and a mark scheme showing where the marks go.