Energy enthalpy entropy - Study guides, Class notes & Summaries

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ACS Physical Chemistry  Thermochemistry Study Guide |100%  Correct|
  • ACS Physical Chemistry Thermochemistry Study Guide |100% Correct|

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  • ACS Physical Chemistry Thermochemistry Study Guide |100% Correct| What is the third law of thermodynamics? *Ans* The entropy of a perfect crystal is zero. What is the second law of thermodynamics? *Ans* As a whole, the universe always tends towards increasing entropy. What is the relationship between number of microstates and entropy? *Ans* More microstates = higher entropy What is the relationship between temperature and entropy? *Ans* Temperature increases, entropy increases (dir...
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ACS Physical Chemistry  Thermochemistry Study Guide |Question  and Answer| 100% Correct
  • ACS Physical Chemistry Thermochemistry Study Guide |Question and Answer| 100% Correct

  • Exam (elaborations) • 42 pages • 2024
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  • ACS Physical Chemistry Thermochemistry Study Guide |Question and Answer| 100% Correct What is the third law of thermodynamics? *Ans* The entropy of a perfect crystal is zero. What is the second law of thermodynamics? *Ans* As a whole, the universe always tends towards increasing entropy. What is the relationship between number of microstates and entropy? *Ans* More microstates = higher entropy What is the relationship between temperature and entropy? *Ans* Temperature increases, en...
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Chemical & Physical Foundations of Biological Systems MCAT || with 100% Accurate Solutions.
  • Chemical & Physical Foundations of Biological Systems MCAT || with 100% Accurate Solutions.

  • Exam (elaborations) • 31 pages • 2024
  • In a barometer: if the external air force outweighs the weight of the mercury, then the column ______. If the external air force is less than the weight of the mercury, the column _____. correct answers rises, drops proteins correct answers amides are the functional groups present in: fructose-6-phosphate, glyceraldehyde-3-phosphate, NADPH, ribose-5-phosphate correct answers list all the products of the PPP: going down periodic table due to greater size and polarizability correct answer...
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MCAT General Chemistry (Princeton Review) Questions and Answers | Latest Update | 2024/2025 | Already Passed
  • MCAT General Chemistry (Princeton Review) Questions and Answers | Latest Update | 2024/2025 | Already Passed

  • Exam (elaborations) • 41 pages • 2024
  • MCAT General Chemistry (Princeton Review) Questions and Answers | Latest Update | 2024/2025 | Already Passed What is the role of a Lewis acid and a Lewis base in a chemical reaction? A Lewis acid is an electron pair acceptor, while a Lewis base is an electron pair donor. They interact to form a coordinate covalent bond where the base donates an electron pair to the acid. How does the concept of bond enthalpy relate to the strength of a chemical bond? Bond enthalpy (or bond dissoci...
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BIOCHEM FINAL Exam Questions With Verified Answers.
  • BIOCHEM FINAL Exam Questions With Verified Answers.

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  • BIOCHEM FINAL Exam Questions With Verified Answers. What are the four most abundant elements found in living organisms? - answerC, O, H, N. What are the seven moderately abundant elements found in living organisms? - answerMg, Na, Cl, Ca, P, S, K. An Acyl functional group - answer-CO-R An Amido functional group - answer-CO-NH- An Amino functional group - answer-NH A Carbonyl functional group - answer-CO- A Carboxyl functional group - answer-COOH A Phosphoanhydride functional group - an...
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RNAS C Practice Test Review 437 Questions with Verified Answers,100% CORRECT
  • RNAS C Practice Test Review 437 Questions with Verified Answers,100% CORRECT

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  • RNAS C Practice Test Review 437 Questions with Verified Answers A capacitor and resisitor in parallel - CORRECT ANSWER will have same voltage across since in parallel. if in series, voltage drops would occur they can be treated together If the absolute pressure of a gas is increased from 3 atm to 4 atm at constant volume, then the absolute temperature of the gas will increase by: A. 25%. B. 33%. C. 67%. D. 75% - CORRECT ANSWER B. Assuming the validity of the Ideal-Gas law, PV = n...
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AP BIOLOGY EXAM 2024 QUESTIONS AND ANSWERS
  • AP BIOLOGY EXAM 2024 QUESTIONS AND ANSWERS

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  • AP BIOLOGY EXAM 2024 QUESTIONS AND ANSWERS Water characteristics - Correct Answer ️️ -polar, cohesion (hold together), adhesion (hold to another substance), surface tension, specific heat, heat of vaporization Surface Tension - Correct Answer ️️ -A measure of how difficult it is to stretch or break the surface of a liquid Specific Heat - Correct Answer ️️ -amount of heat absorbed or lost to change temperature by 1C Heat of Vaporization - Correct Answer ️️ -the quantity of ...
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CHEM191 Module 2 Exam Questions With 100% Correct Answers
  • CHEM191 Module 2 Exam Questions With 100% Correct Answers

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  • CHEM191 Module 2 Exam Questions With 100% Correct Answers What is kinetic energy? - answerenergy of motion what is potential energy? - answerenergy of relative position 0 chemical bonds act as a store of potential energy what happens in terms of heat when a chemical reaction happens? - answerheat (q) is either absorbed or released by the reaction. what is enthalpy? - answerthe heat of reaction measured under conditions of constant pressure. how can the change in enthalpy be determined? ...
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Chem 162 Exam 3 with complete verified solutions 2025
  • Chem 162 Exam 3 with complete verified solutions 2025

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  • Thermodynamics the study of energy transformations thermochemistry applied field to chemical reactions energy the ability to do work or transfer heat work energy used to cause an object that has mass to move heat energy used to cause the temperature of an object to change enthalpy the heat energy absorbed or released by a system during a constant-pressure process deltaH entropy A measure of the dispersion of energy or randomness in a system ...
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OCR A Level Inorganic Chemistry Questions & 100% Correct AnswersLatest Test | Graded A+ | Passed
  • OCR A Level Inorganic Chemistry Questions & 100% Correct AnswersLatest Test | Graded A+ | Passed

  • Exam (elaborations) • 45 pages • 2024
  • Standard enthalpy of formation ֎ -:- The enthalpy change when one mole of a compound is formed from its elements under standard conditions, with all substances in their standard states. Standard change of atomisation ֎ -:- The enthalpy change when one mole of gaseous atoms is formed from the element in its standard state under standard conditions. First ionisation energy ֎ -:- The enthalpy change needed to remove one electron from each atom in one mole of gaseous atoms to form on...
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