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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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2023-09-25 17:34:01
"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
"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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2023-09-25 17:33:59
"Environmental Pollution and Its Prevention and Control" PPT
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2023-09-25 17:35:09
"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
"Sodium carbonate and sodium bicarbonate flame color test" Sodium and its compounds PPT
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2023-10-05 09:32:21
"Sodium carbonate and sodium bicarbonate flame reaction" Sodium and its compounds PPT
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2023-10-05 09:32:21
"Sodium carbonate and sodium bicarbonate flame color test" Sodium and its compounds PPT
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2023-09-25 18:21:32
"Sodium carbonate and sodium bicarbonate flame reaction" Sodium and its compounds PPT
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2023-09-25 18:21:32
"Environmental Pollution and Its Prevention and Control" PPT courseware
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2023-09-25 17:35:09
"Common Acids and Bases" Acids and Bases PPT Courseware
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2023-09-25 18:28:49
"Several Common Acids" Acids and Bases PPT Courseware
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2023-09-25 18:21:24
"Neutralization Reaction of Acids and Bases" Acids and Bases PPT
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2023-09-20 15:18:51
"Several Common Acids" Acids and Bases PPT Courseware
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2023-10-05 09:28:48
"Sour Grapes" PPT courseware
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2023-09-25 17:27:54
"Common Acids and Bases" Acids and Bases PPT Courseware 2
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2023-09-25 18:28:49
"Common Acids and Bases" Acids and Bases PPT Courseware 5
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"Common Acids and Bases" Acids and Bases PPT Courseware 6
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"Several Common Acids" Acids and Bases PPT Courseware 2
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2023-09-25 18:21:24
"Infectious Diseases and Their Prevention" PPT
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2023-09-25 17:34:28
"Common Acids and Bases" Acids and Bases PPT Courseware 3
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2023-09-25 18:28:49
"Common Acids and Bases" Acids and Bases PPT Courseware 4
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2023-09-25 18:28:49
"Sour and Sweet" PPT
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2023-09-25 17:42:39
"Chemical Properties of Acids and Bases" Acids and Bases PPT Courseware 3
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2023-09-25 18:28:48
"Testing the Acidity and Alkalinity of Solutions" Acids and Alkalis PPT Courseware
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2023-09-25 18:28:48
"Preliminary Understanding of Acids and Bases" Acids and Bases PPT Courseware
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2023-10-05 09:28:49
"Chemical Properties of Acids and Bases" Acids and Bases PPT Courseware 2
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2023-09-25 18:28:48
"Preliminary Understanding of Acids and Bases" Acids and Bases PPT Courseware
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2023-09-25 18:21:24
"Common Acids" PPT courseware
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2023-09-25 18:16:38
"Preliminary Understanding of Acids and Bases" Acids and Bases PPT Courseware 2
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2023-10-05 09:28:49
"Neutralization Reaction of Acids and Bases" Acids and Bases PPT Courseware 2
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2023-09-25 18:28:49
"Preliminary Understanding of Acids and Bases" Acids and Bases PPT Courseware 2
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2023-09-25 18:21:24
"Common Acids and Bases" Common Acids, Bases and Salts PPT Courseware
下载 65 次
2023-09-25 18:38:28
"Acidity and Alkalinity of Solutions" Common Acids, Alkalis, and Salts PPT Courseware
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2023-09-25 18:38:28
"Testing the Acidity and Alkalinity of Solutions" Acids and Alkalis PPT Courseware 2
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2023-09-25 18:28:48
"Reaction of Acids and Bases" Common Acids, Bases, and Salts PPT Courseware
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2023-09-25 18:38:28
PPT111 Surgery of each department - gallbladder stones and its prevention
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2023-01-11 11:25:59
"Neutralization Reaction of Acids and Bases" Acids and Bases PPT Courseware 3
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2023-09-25 18:28:48
"Neutralization Reaction of Acids and Bases" Acids and Bases PPT Courseware 4
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2023-09-25 18:28:48
PPT111 Surgery of each department - gallbladder stones and its prevention
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2023-01-11 11:25:59
"Acidity and Alkalinity of Solutions" Common Acids, Alkalis, and Salts PPT Courseware 2
下载 77 次
2023-09-25 18:38:28
"Common Acids and Bases" Common Acids, Bases and Salts PPT Courseware 2
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2023-09-25 18:38:28
"Common Acids and Bases" Acids and Bases PPT Courseware (Lesson 3)
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2023-09-20 15:17:57
"Common Acids and Bases" Common Acids, Bases and Salts PPT Courseware 4
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2023-09-25 18:38:28
"Common Acids and Bases" Acids and Bases PPT Courseware (Lesson 1)
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2023-10-05 09:28:28
"Reaction of Acid and Base" Common Acids, Bases and Salts PPT Courseware 3
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2023-09-25 18:38:28
"Reaction of Acid and Base" Common Acids, Bases and Salts PPT Courseware 2
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"Acidity and Alkalinity of Solutions" Common Acids, Alkalis, and Salts PPT Courseware 4
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2023-09-25 18:38:28
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