224 prompts matching "Describing a covalent compound as conducting when molten"
Exam practice: Finding the concentration of an unknown alkali
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Calculation practice: Calculating the purity of a sample from titration data
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Chemistry at work: The accuracy demanded of an analytical chemist
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Explain back: The standard enthalpy of formation
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Practice set: The standard enthalpies of combustion and of neutralisation
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Exam practice: The energy profile diagram and activation energy
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Calculation practice: Using Hess's law to find an unknown enthalpy change
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Real-life Nigeria: Fuels and their heating values in Nigeria
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Explain back: How a catalyst lowers the activation energy
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Practice set: Homogeneous and heterogeneous catalysis
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Calculation practice: Calculating rate from a graph of concentration against time
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Real-life Nigeria: The catalysts used in Nigerian industry
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Explain back: Le Chatelier's principle stated
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Practice set: The effect of concentration and of pressure on equilibrium
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Exam practice: The effect of temperature on the position of equilibrium
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Calculation practice: Writing and using the equilibrium constant expression
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Real-life Nigeria: Equilibrium in the Haber process
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Chemistry at work: Equilibrium in the contact process for sulphuric acid
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Explain back: Saturated and supersaturated solutions
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Practice set: The solubility curve, and how to read it
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