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donalgray

Member since 2020

Based in

Hong Kong

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iGCSE - Edexcel - Year 11 Organic Chemistry

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IB Chemistry - Topic 16 - 16.1 Rate Expression and Rate Mechanism

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IB Chemistry - Topic 18 - 18.3 pH Curves

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IB Chemistry - Topic 5 - 5.2 Hess's Law

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