Thermodynamics and Energy Transformations in Physical Chemistry
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Questions and Answers

What is the unit of measurement for thermal energy in the text?

  • Pascal
  • Moles
  • Kelvin
  • Joules (correct)
  • Which type of metabolism involves breaking down bonds and releasing energy?

  • Glycolytic metabolism
  • ATP synthesis metabolism
  • Anabolic metabolism
  • Catabolic metabolism (correct)
  • Which type of energy is associated with an object in motion?

  • Potential energy
  • Chemical energy
  • Thermal energy
  • Kinetic energy (correct)
  • What is the primary function of ATP in biological systems?

    <p>Energy storage</p> Signup and view all the answers

    What is the branch of science that deals with transformations of energy and matter?

    <p>Chemistry</p> Signup and view all the answers

    What is the SI unit of pressure?

    <p>Pascal (Pa)</p> Signup and view all the answers

    In thermodynamics, what type of system can exchange both matter and energy with its surroundings?

    <p>Open system</p> Signup and view all the answers

    Which form of energy includes repulsion forces between atoms and molecules?

    <p>Internal energy</p> Signup and view all the answers

    What is the equation for work done in an expansion process under constant external pressure?

    <p>$W = P(V_2 - V)$</p> Signup and view all the answers

    How can the law of conservation of energy be summarized?

    <p>Energy can be transferred or transformed, but not created or destroyed</p> Signup and view all the answers

    If the volume of a system increases during an expansion process, what happens to the work done by the system on the surroundings?

    <p>It increases</p> Signup and view all the answers

    Which unit is commonly used to express energy in the CGS system?

    <p>$erg$</p> Signup and view all the answers

    What is the relationship between energy and the first law of thermodynamics?

    <p>All of the above are correct.</p> Signup and view all the answers

    What is the change in internal energy ($\Delta E$) when a system absorbs 250 J of heat and expands from 1 L to 10 L at a constant external pressure of 0.5 atm?

    <p>$204.15 \text{ J}$</p> Signup and view all the answers

    What is the unit of energy used in the text?

    <p>Joule (J)</p> Signup and view all the answers

    What is the unit of pressure used in the text?

    <p>Atmosphere (atm)</p> Signup and view all the answers

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