500 prompts matching "Exam practice: Coordinate or dative bonding"
Spot my mistake: Predicting that iodine displaces chlorine
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Project task: Researching chlorine's part in Nigerian water treatment
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Chemistry at work: The hazards of the halogens and their safe handling
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Calculation practice: Calculating the yield of sulphuric acid from sulphur
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Chemistry at work: Sulphur dioxide and acid rain in Nigeria
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Quiz me: The laboratory and industrial preparation of nitrogen
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Calculation practice: Calculating the mass of ammonia from nitrogen and hydrogen
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Chemistry at work: Nitrogenous fertilisers in Nigerian farming
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Calculation practice: Calculating the carbon dioxide released by a mass of limestone
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Chemistry at work: Carbon dioxide in the Nigerian bottling and fire-safety trades
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Quiz me: Temporary hardness and the compounds responsible
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Calculation practice: Calculating the amount of softener required
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Chemistry at work: Hardness and the Nigerian water supply industry
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Spot my mistake: Assuming more fertiliser always means a better yield
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Calculation practice: Calculating the nitrogen content of a fertiliser
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Chemistry at work: Fertiliser production and distribution in Nigeria
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Real-life Nigeria: Complex ion formation and the ligands involved
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Chemistry at work: Transition metals in Nigerian industry
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Calculation practice: Calculating the molar mass of a simple peptide
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Real-life Nigeria: The tests for protein, starch and reducing sugar
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