500 prompts matching "Using an unbalanced equation in a stoichiometry calculation"
Exam practice: The laboratory preparation and the tests for chlorine
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Real-life Nigeria: The halogens and their compounds in daily use
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Project task: Researching chlorine's part in Nigerian water treatment
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Chemistry at work: The hazards of the halogens and their safe handling
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Explain back: Sulphur trioxide and the contact process
I have just studied sulphur trioxide and the contact process in my SS3 Chemistry class. Le
Exam practice: Sulphuric acid as an acid, a dehydrating agent and an oxidiser
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Chemistry at work: Sulphur dioxide and acid rain in Nigeria
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Quiz me: The laboratory and industrial preparation of nitrogen
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Explain back: Ammonia, its preparation and its properties
I have just studied ammonia, its preparation and its properties in my SS3 Chemistry class.
Spot my mistake: Treating dilute and concentrated nitric acid alike
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Chemistry at work: Nitrogenous fertilisers in Nigerian farming
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Explain back: The preparation and properties of carbon dioxide
I have just studied the preparation and properties of carbon dioxide in my SS3 Chemistry c
Spot my mistake: Describing carbon monoxide as an acidic oxide
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Chemistry at work: Carbon dioxide in the Nigerian bottling and fire-safety trades
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Explain back: Permanent hardness and the compounds responsible
I have just studied permanent hardness and the compounds responsible in my SS3 Chemistry c
Exam practice: Removing permanent hardness by chemical and ion-exchange methods
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Spot my mistake: Expecting boiling to remove permanent hardness
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Chemistry at work: Hardness and the Nigerian water supply industry
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Explain back: The manufacture of nitrogenous fertilisers
I have just studied the manufacture of nitrogenous fertilisers in my SS3 Chemistry class.
Exam practice: The NPK rating and how to read it
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