京东 11.11 红包
[AS化学] I-2 笔记题2021_B4_电子排布问题12
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AS化学实验_Running an acid base titration analysis (phenolphthalein as indicator)
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[AS化学] I-2 MCQ 19-21 Q18_电子排布问题2
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[AS化学] I-2 MCQ 19-21_Q25_电子排布问题9
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[AS化学] I-2 MCQ 19-21_Q23_电子排布问题7
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[AS化学] I-2 MCQ 19-21_Q24_电子排布问题8
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[AS化学] I-2 笔记题2021_连续电离能问题
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[AS化学] I-2 MCQ 19-21 Q17_电子排布问题1
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[AS化学] I-2 笔记题2021_B5_电子排布问题13
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s21_qp_13_q12
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I-2 MCQ 19-21 Q12(sub-atomic particle的数量问题)
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II-1 Redox_一道氧化还原反应配平问题的解答(1)_s21/qp23/q1
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[AS化学] I-2 笔记题2021_第一电离能定义和影响因素
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Topic 12_Sulfuric acid and the Contact process硫酸的工业制法
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A Level Chemistry MCQ – March 21 – 9701 Paper 12
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[AS化学] I-2 笔记题2021_同一周期第一电离能的变化趋势和原因
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Determination of partition coefficient of benzoic acid (Ch21 Aqueous equilibria)
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[AS化学] IV-4 IR Spectroscopy - Example Spectra
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[IG化学笔记题] Topic 12 non-metal compounds
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[AS Chem] I-1_mole定义相关问题(2)_9701_s20_qp_11_q11
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s21_qp_13_q31
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Standard Hydrogen Electrode (Ch20 Eelectrochemistry)
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[AS化学] IV-4_IR Spectroscopy Background
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[IG化学笔记题] Extraction of Al and Zn
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II-1 MCQ 19-21 Q17
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II-3 MCQ 19-21 Q7
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I-2 MCQ 19-21 Q10(Ar和Mr概念题)
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I-3 Part B Hybridization theory 笔记题
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IV-1_Bromination of alkenes烯烃让溴水褪色
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II-2 Part C Calorimetry笔记题
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[AS Chem] I-1_mole定义相关问题(1)_9701_w19_qp_11
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I-4 Part A Solid 笔记题+例题讲解
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[IG化学真题讲解]Topic 11 Air and water MCQ 2020 上
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Using a gas syringe to measure volumes of gases (2.1 and 7.3)
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I-3 Part A molecular shape笔记题
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A Level Chemistry – March 21 – 9701 Paper 22 - Step-by-step tutorial
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Ch19 Lattice energy笔记题 (mmc+yx+ykx+gzp)
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II-1 Redox笔记题(mmc and yx)
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I-4 Part B ideal gas笔记题讲解
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[IG化学笔记题] Topic 14.4 Alcohol笔记题
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Thermal Decomposition of Calcium Nitrate (10.2 Reactivity series)