Calculating Entropy Changes The standard entropy change (ΔSsystem??) for a given reaction can be calculated using the standard entropies (S??) of the reactants and products The equation to calculat...
ACT與SAT并稱為“美國高考”，ACT成績也是世界各國高中畢業生申請美國本科入學資格的重要參考指標。大部分美國高校都承認ACT成績，其中以分布在中部地區和西部地區的院校居多。部分高校在將ACT成績作為入學條件的同...
Defining Entropy The?entropy (S)?of a given system is the number of possible arrangements of the particles and their energy in a given system In other words, it is a measure of how?disordered?a sys...
Enthalpy of Hydration: Ionic Charge & Radius The standard enthalpy change of hydration (ΔHhyd?) is affected by the amount that the ions are attracted to the water molecules The factors which af...
Energy Cycle Calculations The energy cycle involving the enthalpy change of solution (ΔHsol??), lattice energy (ΔHlatt?), and enthalpy change of hydration (ΔHhyd?) can be used to calculate the diff...
近期，ETS官網出現如下彈窗： 上述彈窗的中文翻譯是： 您在考試證件這一欄中，提供的國家/地區，與您的個人資料頁地址欄中的國家/地區不匹配。請注意，強烈建議您在您居住的國家/地區注冊考試。如果您的實際居住...
Energy Cycle Using Enthalpy Changes & Lattice Energy The standard enthalpy change of hydration (ΔHhyd?) can be calculated by constructing?energy cycles?and applying Hess’s law Energy cycle invo...
Enthalpy Change of Hydration & Solution Enthalpy change of solution The?standard enthalpy change of solution (ΔHsol?)?is the enthalpy change when?1 mole?of an ionic substance?dissolves?in suffi...
Lattice Energy: Ionic Charge & Radius The two key factors which affect lattice energy, ΔHlatt?, are the?charge?and?radius?of the ions that make up the?crystalline lattice Ionic radius The latti...
Calculations Using Born-Haber Cycles Once a Born-Haber cycle has been constructed, it is possible to calculate the lattice energy (ΔHlatt?) by applying Hess’s law and rearranging: ΔHf??= ΔHat??+ ΔH...
作為G5院校之一，帝國理工是很多目標留英同學們的夢校！ 最近，帝國理工官網更新了2020-2021本科錄取數據，錄取率較往年有所升高！ 與此同時，英國政府也發布了全新的“慷慨”簽證政策，大力歡迎留學生，趕快來看看...
8月11日的雅思考試你參加了嗎？ 本場考試的閱讀題巨難！ 快來一起看看考情回顧吧！ 聽力 聽力部分從總體難度上來看還是比較正常的，雖然S1和S2的題型有點偏離常規設置，但填空和選擇類題型總體比例還是相對平衡的...
