500 prompts matching "Calculating the mass of ammonia from nitrogen and hydrogen"
Calculation practice: Calculating percentage recovery after a separation
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Quiz me: Simple distillation and what it separates
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Quiz me: Paper chromatography and how it is carried out
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Practice set: Working out the particles present in a given atom
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Exam practice: Isotopy, with examples of isotopes
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Spot my mistake: Thinking isotopes of an element react differently
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Practice set: Valency deduced from electron configuration
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Calculation practice: Deducing valency from a given configuration
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Quiz me: The symbols for the first thirty elements
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Quiz me: Word equations and chemical equations compared
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Practice set: Writing an equation from a described reaction
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Quiz me: Periods, groups and blocks
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Practice set: Drawing dot-and-cross diagrams for simple molecules
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Practice set: How structure determines melting and boiling point
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Calculation practice: Predicting relative boiling points from structure
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Quiz me: Boyle's law stated and illustrated
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Practice set: Molar volume and its value at s.t.p.
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Quiz me: Temporary hardness and permanent hardness
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Practice set: Removing permanent hardness from water
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Practice set: Measuring pH with paper and with a meter
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