Gibbs equation Study guides, Class notes & Summaries
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AQA A-level CHEMISTRY 7405/3 Paper 3 Question Paper + Mark scheme [MERGED] June 2022 *JUN227405301* IB/M/Jun22/E16 7405/3 For Examiner’s Use Question Mark 1
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AQA 
A-level 
CHEMISTRY 
7405/3 
Paper 3 
Question Paper + Mark scheme [MERGED] 
June 2022 
*JUN* 
IB/M/Jun22/E16 7405/3 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
Section B 
TOTAL 
Time allowed: 2 hours 
Materials 
For this paper you must have: 
• the Periodic Table/Data Booklet, provided as an insert (enclosed) 
• a ruler with millimetre measurements 
• a scientific calculator, which you are expected to use where appropriate. 
Instructions 
• Use black ink or black ball-point...
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BCH 403 Exam 1 questions with complete solutions
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Keq determined by... Correct Answer-chemical stability of reactants and products 
 
Gibbs free energy equation Correct Answer-▲G=▲H-T▲S 
 
thermodynamic coupling Correct Answer-pair favorable w/ unfavorable reaction 
ie hydrolysis of ATP 
 
what is driving force in all biochem reactions Correct Answer-water 
 
_____________ &_______________ structure depend on H2O interaction Correct Answer-protein and membrane 
 
properties of water Correct Answer-high viscosity, high bp, high heat of vap...
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Chemical and Physical Foundations of Biological Systems || with Accurate Answers 100%.
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Rf value correct answers Distance travelled by substance / distance travelled by solvent 
 
Thin lens equation correct answers 1/f = 1/O + 1/I 
 
Ohm's law correct answers V=IR 
Volts 
 
Index of refraction correct answers n=c/v 
 
Energy of a photon correct answers E=hf 
Joules 
 
Work correct answers W = force x distance 
Joules 
 
Ideal Gas Law Equation and assumptions correct answers PV=nRT 
Intermolecular forces are negligible 
Individual molecular volume is negligible 
STP conditions 
 
...
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IB 150 Already Tested Exam Questions and CORRECT Answers
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What is the First Law of Thermodynamics?conservation of energy- cannot be created 
nor destroyed 
What is Chemical Potential Energy?electronegativity, an electron has a high CPE when 
it is far from the positive nucleus 
What is the Second Law of Thermodynamics?change of direction, entropy is high in a 
less organized state 
How can we use the Second Law of Thermodynamics to determine whether or not a reaction 
is spontaneous?Gibbs Free Energy equation 
an exergonic reaction releases gibbs e...
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BIO 3232 Oakland University Exam One Questions And Answers With Verified Solutions Graded A+
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(3) theories of fermentation - substrate (yeast brought chemicals to surface), physiological 
(fermentation took place inside yeast), mechanistic 
(7) characteristics of living organisms - ROMGRAH - reproduction, organization, metabolism, 
growth, respond to stimuli, adaptation, homeostasis 
1 Cal =? - 4.184 J 
a state of more disorder is _______ - state of less potential energy 
anabolic processes - require energy, coupled to ATP hydrolysis 
blending - mechanical blades 
catabolic processes - r...
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TAMU BIO 107 Exam 2 - Christopher Lee Questions and Answers 100% Solved | Already Passed
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What is a virus? - a protein body made up of a capsid with DNA or RNA in it 
Viruses go in a host, then.. - go through replication and assembly 
the host cell membrane is draped over the virus as the.. - virus squeezes out through the cell wall 
a naked virus does not have.. - envelope 
what is covid 19 - a respiratory virus because the receptor it uses to get inside the body is only found 
in the lungs (ace 2) 
what did we not know about covid 19? - -causes an overzealous inflammation in your l...
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CEM 142 Exam 1 Latest Version Already Graded A
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CEM 142 Exam 1 Latest Version Already 
 
Graded A 
 
Open system mass/matter as well as energy can flow in and out of the system 
 
closed system mass/matter can not flow into the system but energy can flow in and out of the 
system 
 
isolated system nothing can enter or leave the system 
 
what is the difference between state and path function State function depend only on the 
initial and final states but not the path taken while a path function requires multiple steps and 
proofs to get to t...
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BIOMG 3350 Questions and Correct Answers
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What is the most important thing change in Gibbs free energy tells us? What does a negative 
value mean and what does a positive value mean? 
Ans how spontaneous a reaction is 
negative delta G = spontaneous, energy is released, exergonic 
positive delta G = non-spontaneous, energy is consumed, endergonic 
what does enthalpy represent? what does it mean when it's positive vs negative? 
Ans delta H is change in enthalpy, which is the heat content of the reacting system. 
It reflects the number ...
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Chem 1020 Test 1 exam questions and verified correct answers
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What happens in a spontaneous reaction? - correct answer the total entropy of the universe must increase. 
 
Change in Free Energy - correct answer -tells position and direction of a reaction 
-easier to calculate than entropy 
 
1st law of thermodynamics - correct answer the energy of the universe is constant. (any energy lost by system is gained by surroundings and vice versa) 
 
2nd law of thermodynamics - correct answer the entropy of the universe increases in any spontaneous process 
 
3rd ...
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Bio 1100 ECU Exam 2 Questions and 100% Correct Answers
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Energy is neither ____ or ____. It simply ________. Created, destroyed, changes form 
What are the 2 types of energy? Kinetic, Potential 
Kinetic Energy (def, @molecular lvl) Energy of Motion; Thermal Energy (heat production through consistent motion) 
Potential Energy (def, @molecular lvl) Energy of position/configuration, stored energy; Chemical energy is stored 
Where do electrons have the greatest potential energy? In the outermost electron shells 
Free energy Amount of energy available to d...
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