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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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2023-09-25 17:34:01
"Transformation of Sulfur" Nature and Transformation of Substances PPT (Second Lesson: 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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"Conversion of Sulfur" Nature and Transformation of Substances PPT (Lesson 2: Sulfuric Acid Rain and Its Prevention and Control)
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"Nitrogen and Its Compounds" Important non-metallic elements in chemical production PPT (Lesson 3: Nitric acid rain and its prevention and control)
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"Nitrogen and Its Compounds" Important non-metallic elements in chemical production PPT (Lesson 3: Nitric acid rain and its prevention and control)
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"Environmental Pollution and Its Prevention and Control" PPT
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"Environmental Pollution and Its Prevention and Control" PPT
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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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"Sulfur and Its Compounds" Important non-metallic elements in chemical production PPT (Test of sulfate ion in lesson 2)
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"Sodium carbonate and sodium bicarbonate flame color test" Sodium and its compounds PPT
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"Sodium carbonate and sodium bicarbonate flame color test" Sodium and its compounds PPT
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"Sodium carbonate and sodium bicarbonate flame color test" Sodium and its compounds PPT
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"Sodium carbonate and sodium bicarbonate flame reaction" Sodium and its compounds PPT
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"Sodium carbonate and sodium bicarbonate flame reaction" Sodium and its compounds PPT
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"Sodium carbonate and sodium bicarbonate flame color test" Sodium and its compounds PPT
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"Sodium carbonate and sodium bicarbonate flame reaction" Sodium and its compounds PPT
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"Environmental Pollution and Its Prevention and Control" PPT courseware
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111 Surgery-Cholecystolithiasis and its prevention and treatment
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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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"Sour Grapes" PPT courseware
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"Several Common Acids" Acids and Bases PPT Courseware 2
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"Several Common Acids" Acids and Bases PPT Courseware 2
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"Infectious Diseases and Their Prevention" PPT
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"Infectious Diseases and Their Prevention" PPT
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"Sour and Sweet" PPT
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"Common Acids and Bases" Acids and Bases PPT Courseware 4
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"Common Acids and Bases" Acids and Bases PPT Courseware 4
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"Sour Grapes" PPT courseware
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"Sour and Sweet" PPT
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