500 prompts matching "The origin and composition of crude oil"
Exam practice: Percentage yield, and why it falls short of a hundred
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Calculation practice: Calculating the volume of gas produced in a reaction
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Chemistry at work: Empirical and molecular formulae from composition data
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Calculation practice: Calculating the concentration of an acid solution
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Real-life Nigeria: Separation methods in Nigerian salt and oil production
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Exam practice: The laboratory preparation of hydrogen
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Quiz me: Separating the components of air
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Calculation practice: Calculating the volume of oxygen used in a reaction
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Chemistry at work: The uses of the gases separated from air
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Spot my mistake: The errors most often made in second-term SS1 Chemistry
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Practice set: The electrolysis of acidified water
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Teach me: Oxidation and reduction in terms of oxygen
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Quiz me: Oxidation and reduction in terms of hydrogen
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Explain back: Oxidation and reduction in terms of electrons
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Exam practice: Heat of reaction, of neutralisation and of combustion
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Teach me: What the rate of a reaction means
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Quiz me: Measuring the rate of a reaction
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Teach me: The allotropes of carbon
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Exam practice: The uses of each allotrope of carbon
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Teach me: The oxides of carbon
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