The energy transferred as the result of a temperature difference is defined as.

Question

The energy transferred as the result of a temperature difference is defined as. What is the change in internal energy of a system when it loses 30 kJ of energy and 7000 J of work is done on the system? For a process at constant pressure. In terms of the enthalpy of formation, which of the following compounds is most stable relative to its elements under standard conditions? The statement "The Delta H of a reaction that is the sum of two or more reactions is equal to the sum of the All values of the constituent reactions" correspond to: "The most stable form of a substance at 1 atm pressure, at 25 degreeC and 1 M concentration in solution" is the definition of: The following diagrams illustrate the flow of energy (q) and work (W) In different

Explanation / Answer

7. D
gases transfer from one place to another place is called diffusion
Gases escape from the small hole is called effusion

8. E
Heat energy transfered due to difference of temperature.

9. B
delta U = q + W
          = -30-7 = -37kj

10. B
   deltaH = q

11.E

12. C Hess law

13. B
delta H = +77.5Kj

14. E

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