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Chemistry tutorial-Ch7-5-Chemical formula and name of an ionic compound

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Chemistry tutorial-Ch8-5-Relative molecular mass and formula mass

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Chem_Revision_Ch_9.5

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【呂老師的數學教室】15秒搞掂變分百分率問題！ #F5 Ch.6.2

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Chemistry tutorial-Ch12-5-Reactions of metals with dilute hydrochloric acid and dilute sulphuric acid

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Chem_Revision_Ch_11.5

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Chem_Revision_Ch_13.5

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Chemistry tutorial-Ch14-5-Common alkalis in daily life and in the laboratory

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