2023年美國高中傳媒大賽報名已開啟-比賽時間-參賽主題
美國高中傳媒大賽 International Writing, Photography and Multimedia Contest 含金量：5.0 難度：4.0 美國高中傳媒大賽每年有近20萬美國高中生參與，是美國中學(xué)校長協(xié)會(National Association of Secondary Sch...
2022年英國院校畢業(yè)薪資TOP5專業(yè)
近日，根據(jù)英國求職網(wǎng)站Adzuna的最新調(diào)查報告，英國2022屆大學(xué)畢業(yè)生，薪酬將比2021年高出了7%，英國留學(xué)前景越來越可觀。圖源：Bloomberg 報告顯示： 2022年暑期，英國招聘網(wǎng)站上針對畢業(yè)生校招崗位的平均工資達...
美本八大藤校轉(zhuǎn)學(xué)數(shù)據(jù)和轉(zhuǎn)學(xué)政策匯總！
和中國本科不同，美國本科申請并不是“一錘定音”。在美國轉(zhuǎn)學(xué)其實是一個十分普遍的現(xiàn)象，不喜歡、不適合、地理位置偏僻、學(xué)校資源有限等等讓自己無法適應(yīng)的因素，都可以通過“轉(zhuǎn)學(xué)”來改變。 每年都有大量的學(xué)生通過...
2022年英國大學(xué)畢業(yè)起薪排行榜揭曉
近日，根據(jù)英國求職網(wǎng)站Adzuna的最新調(diào)查報告，英國2022屆大學(xué)畢業(yè)生，薪酬將比2021年高出了7%，英國留學(xué)前景越來越可觀。圖源：Bloomberg報告顯示： 2022年暑期，英國招聘網(wǎng)站上針對畢業(yè)生校招崗位的平均工資達...
CIE A Level Chemistry復(fù)習(xí)筆記5.1.3 Constructing Born-Haber Cycles
Constructing Born-Haber Cycles To calculate the lattice energy (ΔHlatt?) of an ionic compound, a?Born-Haber cycle?is used, which is a special type of energy cycle To find the ΔHlatt??of an ionic co...
CIE A Level Chemistry復(fù)習(xí)筆記5.1.2 Electron Affinity & Trends of Group 16 & 17 Elements
Electron Affinity Electron affinity The?first electron affinity?(EA1) is the enthalpy change when?1 mole?of?electrons?is added to?1 mole?of?gaseous atoms,?to form?1 mole?of?gaseous ions?each with a...
CIE A Level Chemistry復(fù)習(xí)筆記5.1.1 Lattice Energy & Enthalpy Change of Atomisation
Lattice Energy & Enthalpy Change of Atomisation Enthalpy change?(ΔH) refers to the amount of heat energy?transferred?during a chemical reaction, at a constant pressure Enthalpy change of atomis...
CIE A Level Chemistry復(fù)習(xí)筆記4.1.6 M + 2 Peak
Detecting Bromine & Chlorine Atoms Using M+2 Peak The presence of bromine or chlorine atoms in a compound gives rise to a?[M+2]?and possibly?[M+4]?peak Chlorine Chlorine exists as two isotopes,...
CIE A Level Chemistry復(fù)習(xí)筆記4.1.5 M + 1 Peak
Determine Number of Carbon Atoms Using M+1 Peak The?[M+1]?peak is caused by the presence of the carbon-13 (13C) isotope in the molecule Carbon-13 makes up approximately 1.1% of all carbon atoms The...
CIE A Level Chemistry復(fù)習(xí)筆記4.1.4 Molecular Ion Peak & Fragmentation
Mass Spectrometry: Deducing Molecular Formula Each?peak?in the mass spectrum corresponds to a certain?fragment?with a particular?m/e?value The peak with the highest?m/e?value is the molecular ion (...
CIE A Level Chemistry復(fù)習(xí)筆記4.1.3 Isotopic Abundance & Relative Atomic Mass
Calculating Relative Atomic Mass Isotopes?are different atoms of the?same?element?that contain the same number of?protons?and electrons but a different number of?neutrons. These are atoms of the sa...
CIE A Level Chemistry復(fù)習(xí)筆記4.1.2 Mass Spectrometry
Interpreting Mass Spectra 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 ...
