500 prompts matching "Using simple distillation on liquids with close boiling points"
Practice set: The Haber process and the conditions it uses
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Exam practice: Nitric acid, its manufacture and its reactions
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Calculation practice: Calculating the mass of ammonia from nitrogen and hydrogen
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Real-life Nigeria: The nitrogen cycle and nitrogen fixation
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Explain back: The preparation and properties of carbon dioxide
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Practice set: The preparation and properties of carbon monoxide
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Exam practice: The tests that distinguish the two oxides of carbon
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Calculation practice: Calculating the carbon dioxide released by a mass of limestone
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Real-life Nigeria: Carbonates, hydrogencarbonates and their reactions
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Explain back: Permanent hardness and the compounds responsible
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Exam practice: Removing permanent hardness by chemical and ion-exchange methods
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Calculation practice: Calculating the amount of softener required
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Calculation practice: Calculating the nitrogen content of a fertiliser
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Real-life Nigeria: The effect of fertiliser overuse on soil and water
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Explain back: Variable oxidation state, and why it arises
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Practice set: The coloured ions of the transition metals
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Exam practice: Transition metals and their compounds as catalysts
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Calculation practice: Working out the oxidation state in a complex ion
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Real-life Nigeria: Complex ion formation and the ligands involved
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Exam practice: Carbohydrates and their classification
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