Many nickel ores are described as low grade. This means that the percentage of nickel in the ore is very small.
8000 kg of one nickel ore was found to contain 56.0 kg of nickel.
Calculate the percentage of nickel in this ore.
110 exam-style questions on Edexcel GCSE Chemistry 5.1 Obtaining and using metals, covering 5.1.1 The reactivity series of metals, 5.1.2 Displacement reactions as redox reactions, 5.1.3 Extracting metals from ores by reduction, 5.1.4 Biological methods of metal extraction, 5.1.5 Resistance to oxidation and recycling metals, and 5.1.6 Life cycle assessment. Each one has a worked solution and a mark scheme showing where the marks go.