Energy enthalpy entropy - Study guides, Class notes & Summaries

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IB chemistry HL Latest Version Graded  A+
  • IB chemistry HL Latest Version Graded A+

  • Exam (elaborations) • 9 pages • 2024
  • IB chemistry HL Latest Version Graded A+ exothermic reaction heat is released by the system ΔΗ<0 endothermic reaction heat is absorbed by the system ΔΗ>0 standard enthalpy change of reaction(ΔΗ) the heat energy transferred under standard conditions (pressure-101.3 kPa, temperature- 298 K) combustion and neutralization are exothermic processes average bond enthalpy the energy required to break one mole of a certain type of bond in the gaseous state averaged acro...
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Test Bank for Chemical Principles, 8th Edition by Peter Atkins
  • Test Bank for Chemical Principles, 8th Edition by Peter Atkins

  • Exam (elaborations) • 558 pages • 2024
  • Test Bank for Chemical Principles: The Quest for Insight 8e 8th Edition by Peter Atkins; Loretta Jones; Leroy Laverman; Kelley Young; James Patterson. Full Chapters are included (Focus 1 to Focus 10 are included) Focus 1: Atoms 1A Investigating atoms 1B Quantum theory 1C Wavefunctions and energy levels 1D The hydrogen atom 1E Many-electron atoms 1F Periodicity Focus 2: Bonds Between Atoms 2A Ionic bonding 2B Covalent bonding 2C Beyond the octet rule 2D The properties of bonds 2...
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Biology 2601 Exam 2 || with 100% Errorless Solutions.
  • Biology 2601 Exam 2 || with 100% Errorless Solutions.

  • Exam (elaborations) • 9 pages • 2024
  • ability to promote change or do work correct answers What is energy? Kinetic, structure, location correct answers _______________ energy is associated with movement; the other type of energy is potential, which is affected by _________________ or _______________. Energy is neither created nor destroyed. correct answers What is the first law of thermodynamics? increase correct answers When the second law of thermodynamics is utilized, the entropy of a system will always _________________...
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Chem Exam: Types of Calculation Questions & Answers 100% Verified
  • Chem Exam: Types of Calculation Questions & Answers 100% Verified

  • Exam (elaborations) • 25 pages • 2024
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  • Chem Exam: Types of Calculation Questions & Answers 100% Verified Calorimetry Calculations: 1. 2.50 kJ of energy changes the temperature of a sample of lead by 8.52 degrees C. What is the mass of the sample? - ANS-Q = mcΔT m=Qc/Δt m = 2500/0.13(8.52) = 2.3×103 g 2. 950.3 J of energy is removed from 28.5 g of water at 80.3 degrees C. What is the final temperature? - ANS-Q = mcΔT −950.3 = 28.5(4.18)(T2 − 80.3) T2 = −950.3/(28.5)(4.18) + 80.3 = 72.3O C 3. A 30.56 g sample...
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CEM 142 EXAM 2 LATEST UPDATE  GRADED A+
  • CEM 142 EXAM 2 LATEST UPDATE GRADED A+

  • Exam (elaborations) • 9 pages • 2024
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  • CEM 142 EXAM 2 LATEST UPDATE GRADED A+ **ACID = ELECTRON PAIR ACCEPTOR Acid= electrophile **BASE = ELECTRON PAIR DONOR base= nucleophile strong acid fully ionizes in solution/completely dissociates weak acid does not fully ionize or dissociate into ions ** negatively charged ion ---> wants to loose 1 electron can tell if a solution is ionized when... a fully ionized solution will conduct more electricity than a non fully ionized solution strength of acid depend...
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MCAT entrance exam all subjects combined questions & answers latest update
  • MCAT entrance exam all subjects combined questions & answers latest update

  • Exam (elaborations) • 196 pages • 2023
  • m   1. Which of the following is the mRNA start codon in most cases? A. UAA B. AGU C. AUG D. UGA 2. Which of the types of RNA is the smallest? A. mRNA B. tRNA C. rRNA D. 3. Which of the following is not considered a pyrimidine? A. C B. T C. U D. G 4. Which of the following is paired correctly? A. A-G B. C-G C. A-U D. G-T 5. Which of the following characterizes a Western blot? A. Antibody/protein hybridization B. DNA/RNA combination C. RNA ...
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Exam 3 - Physical Chemistry University of Nebraska - Omaha Questions with well explained answers
  • Exam 3 - Physical Chemistry University of Nebraska - Omaha Questions with well explained answers

  • Exam (elaborations) • 7 pages • 2024
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  • Phase - Answer-Substance in a form of matter which is homogeneous throughout in chemical composition and physical state Transition - Answer-A change from one state to another at a characteristic temperature and a given pressure What happens to free energy between phase in a spontaneous process? - Answer-The free energy decreases between phases What happens to free energy as the pressure increases? - Answer-Free energy increases as pressure increases due to the fact that molar volume is al...
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BICH 409 Exam 1 || with 100% Correct Answers.
  • BICH 409 Exam 1 || with 100% Correct Answers.

  • Exam (elaborations) • 20 pages • 2024
  • isolated system correct answers no exchange of energy or matter (thermos, ice chest) closed system correct answers only energy is allowed to be exchanged (chicken egg, unopened soda, stoppered reaction flask) open system correct answers both energy and matter are allowed to exchange (human, cell, open reaction flask, opened soda) what is the only way to change internal energy in a closed system? correct answers heat or work first law of thermodynamics correct answers the energy of ...
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Bio 1100 ECU Exam 2 Questions and 100% Correct Answers
  • Bio 1100 ECU Exam 2 Questions and 100% Correct Answers

  • Exam (elaborations) • 13 pages • 2024
  • 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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BIOA01H3 F Life on Earth PRACTICE QUESTIONS for FINAL EXAM ACTUAL TIPS (possible questions with correct answers) new update University of Toronto, Scarborough
  • BIOA01H3 F Life on Earth PRACTICE QUESTIONS for FINAL EXAM ACTUAL TIPS (possible questions with correct answers) new update University of Toronto, Scarborough

  • Exam (elaborations) • 12 pages • 2024
  • BIOA01H3 F Life on Earth PRACTICE QUESTIONS for FINAL EXAM ACTUAL TIPS (possible questions with correct answers) new update University of Toronto, Scarborough Here are 60 Practice Questions so you can have an idea of the kind of questions that are likely to be asked on the Final Exam. 1. Which structure is common to plant and animal cells? A. chloroplast B. wall made of cellulose C. central vacuole D. mitochondrion E. centriole 2. Which of the following is true for all exergonic reacti...
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