500 prompts matching "The units and quantities used in chemistry"
Practice set: The Haber process and the conditions it uses
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Spot my mistake: Treating dilute and concentrated nitric acid alike
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Real-life Nigeria: The nitrogen cycle and nitrogen fixation
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Chemistry at work: Nitrogenous fertilisers in Nigerian farming
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Teach me: The allotropes of carbon and their structures
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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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Quiz me: Temporary 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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Real-life Nigeria: The advantages and disadvantages of hard water
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Teach me: The nutrients plants need, and the role of each
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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
I have just studied variable oxidation state, and why it arises in my SS3 Chemistry class.
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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Chemistry at work: Transition metals in Nigerian industry
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