A-level人文學(xué)科有哪些？人文學(xué)科重要嗎？
A-level人文學(xué)科重要嗎？ 重要！ A-level人文學(xué)科雖然沒有常規(guī)科目選的人多，但在申請大學(xué)時很多專業(yè)是有指定要求的。 A-level心理學(xué) 大學(xué)心理學(xué)學(xué)位不要求必須學(xué)習(xí)過A-level Psychology。很多專業(yè)要求一門scienc...
IB DP Chemistry: HL復(fù)習(xí)筆記7.1.6 Catalysts & Equilibrium
Catalysts & Equilibrium Changes in concentration If all other conditions stay the same, the equilibrium constant?Kc?is?not affected?by any changes in concentration of the reactants or products ...
IB DP Chemistry: HL復(fù)習(xí)筆記7.1.5 Le Chatelier's Principle
Le Chatelier's Principle Position of the equilibrium The?position of the equilibrium?refers to the relative amounts of products and reactants in an equilibrium mixture. When the position of equilib...
IB DP Chemistry: HL復(fù)習(xí)筆記7.1.4 The Reaction Quotient
The Reaction Quotient The?reaction quotient,?Q, is the ratio of products and reactants for a reaction that has?NOT?yet reached equilibrium The expression for?Q?is very similar to?Kc: It is a useful...
IB DP Chemistry: HL復(fù)習(xí)筆記7.1.3 Equilibrium Constant Relationships
Equilibrium Constant Relationships In the previous section we saw that the concentrations of the substances are raised to the?power of the coefficients?from the balanced equation This means the?Kc?...
IB DP Chemistry: HL復(fù)習(xí)筆記7.1.2 The Equilibrium Law
The Equilibrium Constant Equilibrium expression & constant The?equilibrium expression?is an expression that links the?equilibrium constant,?Kc, to the?concentrations of reactants and products?a...
IB DP Chemistry: HL復(fù)習(xí)筆記7.1.1 The State of Equilibrium
The State of Equilibrium Reversible reaction Some reactions go to completion where the reactants are used up to form the products and the reaction stops when all of the reactants are used up In?rev...
IB DP Chemistry: HL復(fù)習(xí)筆記6.1.8 Energy Profiles & Catalysis
Energy Profiles & Catalysis Catalysis?is the process in which the rate of a chemical reaction is increased, by adding a substance called a?catalyst A catalyst increases the rate of a reaction b...
IB DP Chemistry: HL復(fù)習(xí)筆記6.1.7 Maxwell-Boltzmann Curves
Maxwell-Boltzmann Curves Boltzmann distribution curve The?Boltzmann distribution curve?is a graph that shows the distribution of?energies?at a certain?temperature In a sample of a substance, a few ...
