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❤️🔥 So, CHEMISTRY FACULTY, shall we make it even higher than 100 on the 2025 Unified State Exam? https://vk.cc/cAg3NK THE WEB IS NOT WORKING? GO HERE 👉 https://vk.com/video-204867494_456240131 OR HERE 👉 https://rutube.ru/video/8a99c5d31205d... Are you looking for educational and cool content on other subjects? Then my colleagues know how to prepare for high scores! 👉 https://vk.cc/cB0VBM 💌 My social networks: VK - https://vk.com/himfak_ege Telegram - https://t.me/chemist_msu 💻Our platforms for learning Educational platform https://100points.ru/ "USE Bank" - prepare for the exam with the correct tasks https://bank-ege.ru/ #ege2025 #egechemistry #chemistry #egebiology #school Time codes: 0:00:00 Introduction 0:03:17 Remembering the last lesson and getting ready for the new one 0:05:50 Tasks #27 and 28 0:12:00 Formulas for calculating the amount of a substance 0:16:13 Calculations based on the reaction equation 0:17:26 Task #28.1 (old type) 0:26:03 Task #28.2 (old type) 0:33:27 Task #28.3 (old type) 0:39:23 Mass fraction of substance in a solid mixture 0:43:11 Task #28.4 for the mass fraction of impurity 0:54:47 Task #28.5 for the mass fraction of impurity 1:05:35 Task #28.6 for the mass fraction of impurity 1:14:25 Reaction yield 1:19:22 Task #28.7 for the mass fraction of impurity 1:28:19 Task #28.8 for the reaction yield 1:36:05 Heat of reaction 1:38:49 Task #27.1 1:41:57 Task #27.2 1:44:12 Task #27.3 1:46:47 Task #27.4 1:49:44 Summing up