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"Sodium and Its Compounds" Important elements in seawater - sodium and chlorine PPT (Lesson 1: Active metal element - sodium)
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2023-09-20 15:12:40
"Amount of Matter" Important elements in seawater - sodium and chlorine PPT (Unit of amount of matter in Lesson 1 - mole)
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2023-10-05 09:46:46
"Amount of Matter" Important elements in seawater - sodium and chlorine PPT (Unit of amount of matter in Lesson 1 - mole)
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2023-09-25 18:21:26
"Sodium and Its Compounds" Important elements in seawater - sodium and chlorine PPT (Lesson 1: Active metal element - sodium)
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2023-09-25 18:21:27
"Hydrosphere and Water Cycle" PPT download of the surface environment from the perspective of the earth's sphere (lesson 2: the movement and influence of sea water)
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2023-09-25 17:35:00
"Comparison between Zheng He's voyages to the West and Columbus's voyages" The dawn of world industrial civilization and the beginning of modern society PPT
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2023-09-25 18:26:32
"Chlorine and its Compounds" Important elements in seawater - sodium and chlorine PPT (Lesson 2 Laboratory preparation method of chlorine and test of chloride ions)
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2023-09-25 18:21:26
"Chlorine and its Compounds" Important elements in seawater - sodium and chlorine PPT (Lesson 2 Laboratory preparation method of chlorine gas and test of chloride ions)
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2023-10-05 09:46:46
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