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"Sulfur and Its Compounds" Important non-metallic elements in chemical production PPT (Test of sulfate ion in lesson 2)
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2023-09-25 17:34:00
"Sulfur and Its Compounds" Important non-metallic elements in chemical production PPT (Test of sulfate ion in lesson 2)
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2023-09-25 17:34:00
"Testing the Acidity and Alkalinity of Solutions" Acids and Alkalis PPT Courseware
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2023-09-25 18:28:48
"Conversion of Sulfur" Nature and Transformation of Substances PPT (Lesson 2: Sulfuric Acid Rain and Its Prevention and Control)
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"Transformation of Sulfur" Nature and Transformation of Substances PPT (Second Lesson: Sulfuric Acid Rain and Its Prevention and Control)
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"Testing the Acidity and Alkalinity of Solutions" Acids and Alkalis PPT Courseware 2
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"Transformation of Sulfur" Nature and Transformation of Substances PPT (Second Lesson: Sulfuric Acid Rain and Its Prevention and Control)
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"Conversion of Sulfur" Nature and Transformation of Substances PPT (Lesson 2: Sulfuric Acid Rain and Its Prevention and Control)
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"Sour and Sweet" PPT
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"Sour and Sweet" PPT
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"Transformation of Sulfur" Properties and Transformation of Matter PPT (Sulfur Dioxide in Nature in the First Lesson)
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"Transformation of Sulfur" Properties and Transformation of Matter PPT (Sulfur Dioxide in Nature in the First Lesson)
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"Common Acids and Bases" Acids and Bases PPT Courseware
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"Several Common Acids" Acids and Bases PPT Courseware
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"Several Common Acids" Acids and Bases PPT Courseware
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"Neutralization Reaction of Acids and Bases" Acids and Bases PPT
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"Several Common Acids" Acids and Bases PPT Courseware
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"Common Acids and Bases" Acids and Bases PPT Courseware
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"Several Common Acids" Acids and Bases PPT Courseware
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"Neutralization Reaction of Acids and Bases" Acids and Bases PPT
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