250 prompts matching "Separating sand from salt at home"
Exam practice: The procedure for a standard acid-base titration
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Spot my mistake: Rinsing the burette with water before filling it
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Calculation practice: Preparing a solution of a stated concentration
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Teach me: The mole ratio in a titration calculation
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Explain back: Calculating the average titre correctly
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Exam practice: Finding the concentration of an unknown alkali
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Spot my mistake: Averaging titres that are not concordant
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Real-life Nigeria: Back titration, and when it is used
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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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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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Teach me: The collision theory of reaction rate
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Explain back: How a catalyst lowers the activation energy
I have just studied how a catalyst lowers the activation energy in my SS2 Chemistry class.
Exam practice: Measuring rate by volume of gas or by loss of mass
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Spot my mistake: Saying a catalyst changes the position of equilibrium
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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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Exam practice: The effect of temperature on the position of equilibrium
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