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Watch Later 1:55

Chemistry tutorial-Ch11-1-Comparing reactivities of common metals

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化學教室-第11章-3-金屬的外表和貯存方法

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化學教室-第11章-2-金屬與氧的反應

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化學教室-第11章-1-比較金屬的活潑性

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Chemistry tutorial-Ch20-1-Fossil fuels as a major energy source

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化學教室-第20章-1-主要的能源-化石燃料

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F4_化學_CH15B-4-由質量百分比求摩爾濃度

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F4_化學_CH15B-3-有關稀釋溶液的計算

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F4_化學_CH15B-2-求溶液中離子的濃度

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