2022美國規模最大的女生數學賽事Math Prize for Girls 10月將在MIT舉行!
美國規模最大的女生數學賽事, Math Prize for Girls 將于10月在MIT舉辦! 或許你對它有些陌生, 不過它和大家所熟悉的AMC有著不可分割的關系! 一起來了解一下吧! Math Prize for Girls 該賽事活動接受美國及加...
美國規模最大的女生數學賽事, Math Prize for Girls 將于10月在MIT舉辦! 或許你對它有些陌生, 不過它和大家所熟悉的AMC有著不可分割的關系! 一起來了解一下吧! Math Prize for Girls 該賽事活動接受美國及加...
NEC全美經濟學挑戰報名啟動?? 截止日期:11月30日?? 10月15日前可享受早鳥價優惠 報名費立減100元! 全球歷史最悠久的經濟學活動 讓全世界看到中國青年學子的能力 通往國際的舞臺已為你打開大門 歡迎加入2023 NEC...
開學季來臨!大家是不是“書荒”了呢? 哈佛大學發布2022暑期書單 各學院教授每年都會推薦一些經典讀物 相信每位同學都能 在這個列表中找到喜歡的那本書! www.harvard.edu/in-focus/summer-reads/book-recommendat...
Interpreting an IR Spectrum Infrared (IR) spectroscopy?is a technique used to identify compounds based on changes in?vibrations?of atoms when they?absorb?IR of certain?frequencies A?spectrop...
Mass Spectrometry Mass spectroscopy?is an analytical technique used to identify unknown compounds The molecules in the small sample are?bombarded?with high energy electrons which can cause t...
Organic Liquid Preparation & Purification Simple Distillation This is used to separate a liquid and?soluble solid?from a solution (e.g. water from a solution of salt water) or a pure liq...
Reactions of Alcohols Combustion of alcohols Alcohols react with oxygen in the air when ignited and undergo?complete combustion?to form carbon dioxide and water alcohol + oxygen → carbon dio...
Classifying Alcohols Alcohols?are a family of molecules that contain the?hydroxyl functional group,?-OH Their general formula is ?CnH2n+1OH The nomenclature of alcohols follows the pattern?a...
Reactivity of Halogenoalkanes Nucleophilic substitution reactions can occur in two different ways (known as?SN2?and?SN1?reactions) depending on the structure of the halogenoalkane involved T...
? 2026. All Rights Reserved. 滬ICP備2023009024號-1