500 prompts matching "Graphite in Nigerian pencils and electrodes"
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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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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Spot my mistake: Describing carbon monoxide as an acidic oxide
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Calculation practice: Calculating the carbon dioxide released by a mass of limestone
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Quiz me: Temporary hardness and the compounds responsible
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Practice set: Removing temporary hardness
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Spot my mistake: Expecting boiling to remove permanent hardness
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Calculation practice: Calculating the amount of softener required
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Quiz me: Straight fertilisers and compound fertilisers
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Practice set: Phosphate and potash fertilisers
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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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Exam practice: Transition metals and their compounds as catalysts
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Spot my mistake: Calling zinc a typical transition metal
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Calculation practice: Working out the oxidation state in a complex ion
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Quiz me: Naming the simple amines
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Exam practice: Carbohydrates and their classification
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Calculation practice: Calculating the molar mass of a simple peptide
Act as my SS3 Chemistry tutor. Walk me through calculating the molar mass of a simple pept