500 prompts matching "Oxidation numbers and how to assign them"
Chemistry at work: Sources of error, and how candidates should discuss them
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Explain back: Limiting reagent problems, and how to spot the limit
I have just studied limiting reagent problems, and how to spot the limit in my SS3 Chemist
Quiz me: Atomic number, mass number and isotopes
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Exam practice: The NPK rating and how to read it
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Practice set: Reforming, isomerisation and octane number
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Practice set: Soapless detergents and how they differ from soap
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Practice set: The classes of dye and how each is applied
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Practice set: Pharmacy, medicine and the laboratory sciences
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Practice set: Gas volume and stoichiometry calculations
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Practice set: Indicators and their working ranges
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Practice set: Proteins, their structure and the tests for them
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Spot my mistake: Adding excess reagent too early and losing a precipitate
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Teach me: The electrochemical cell, and how it differs from an electrolytic one
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Teach me: The equilibrium constant and how it is written
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Quiz me: Kc and Kp, and the difference between them
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Spot my mistake: Assuming every fuel burns to carbon dioxide and water alone
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Real-life Nigeria: Radioisotopes in medicine, industry and dating
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Real-life Nigeria: The tests and observations WAEC asks you to recall
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Chemistry at work: Laboratory discipline and safety in the practical examination
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Real-life Nigeria: Reporting an answer to the right number of figures
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