188 prompts matching "Working out a molecular formula from a general formula"
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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Quiz me: The characteristics of a system at equilibrium
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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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Spot my mistake: Claiming a catalyst shifts the position of equilibrium
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Calculation practice: Writing and using the equilibrium constant expression
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Quiz me: The factors that affect solubility
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Explain back: Saturated and supersaturated solutions
I have just studied saturated and supersaturated solutions in my SS2 Chemistry class. Let
Exam practice: Solubility product and sparingly soluble salts
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Spot my mistake: Reading a solubility curve at the wrong temperature
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Calculation practice: Calculating solubility in moles per cubic decimetre
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Quiz me: What causes temporary and what causes permanent hardness
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Explain back: The methods of softening hard water
I have just studied the methods of softening hard water in my SS2 Chemistry class. Let me
Exam practice: The tests for water purity
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Spot my mistake: Proposing boiling as a cure for permanent hardness
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Calculation practice: Calculating the mass of washing soda needed to soften water
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Explain back: The formation and the effects of acid rain
I have just studied the formation and the effects of acid rain in my SS2 Chemistry class.
Exam practice: Ozone depletion and its causes
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Spot my mistake: Blaming ozone depletion for the warming that greenhouse gases cause
Act as my SS2 Chemistry tutor. Show me a worked answer on blaming ozone depletion for the