A-level經濟知識點講解：國際收支的結構
作為管理、金融、會計學專業的基礎，A-level經濟一直是非常受歡迎的科目。眾所周知A-level經濟難度真的不小，今天我們就一起來看看國際收支的結構這個知識點。 國際收支平衡——國際收支的結構 對于許多Alevel學生...
IB DP Chemistry: HL復習筆記17.1.1 Applying the Equilibrium Law
Explaining Le Chatelier’s Principle Le Chatelier's principle Le Chatelier's principle says that if a change is made to a system at?dynamic equilibrium, the position of the equilibrium moves to mini...
IB DP Chemistry: HL復習筆記16.2.3 Activation Energy from Rate Constants
Activation Energy from Rate Constants at Different Temperatures Arrhenius Plots Arrhenius plots for two reactions with different activation energies can be drawn on the same graph Arrhenius plots f...
IB DP Chemistry: HL復習筆記16.2.2 Graphing the Arrhenius Equation
Graphing the Arrhenius Equation Finding the Activation Energy Very often, the Arrhenius equation is used to calculate the activation energy of a reaction A question will either give sufficient info...
IB DP Chemistry: HL復習筆記16.2.1 The Arrhenius Equation
The Arrhenius Equation The rate equation shows how each of the reactants in a reaction effects the rate of the reaction and it includes the rate constant,?k However,?k?only remains constant if the ...
IB DP Chemistry: HL復習筆記16.1.5 Mechanism Problems
Mechanism Problems Chemical kinetics can only?suggest?a reaction mechanism, they cannot prove it However, they can be used to disprove a proposed mechanism Elementary steps are the steps involved i...
IB DP Chemistry: HL復習筆記16.1.4 Rate Determining Step
Molecularity & Rate Determining Step Rate-determining step & intermediates A chemical reaction can only go as fast as the slowest part of the reaction So, the?rate-determining step?is the s...
IB DP Chemistry: HL復習筆記16.1.3 Graphical Representations
Graphical Representations of Reaction Order Reaction Order Using Concentration-Time Graphs In a?zero-order?reaction, the concentration of the reactant is inversely proportional to time This means t...
IB DP Chemistry: HL復習筆記16.1.2 Rate Constants
Rate Constants The?rate constant, (k), of a reaction can be calculated using the initial rates and the rate equation Calculating the rate constant from the initial rate The reaction of sodium carbo...
