Question

1. A gas does 800 J of work to expand and push a piston. If the...

1. A gas does 800 J of work to expand and push a piston. If the total energy of the gas does not change, what is the heat for this process? Take the bold work to be the system.

2. Sodium dimer (Na2) has a vibrational constant of 159.13 cm-1. Calculate the vibrational partition function of Na2 to three significant figures at 300 K. The degeneracy is 1.

3. Calculate the work done (in J) when the volume of an ideal gas changes from 1.00 L to 3.00 L at an initial temperature of 25 degrees celsius and at a constant pressure of 1 bar.

Homework Answers

Answer #1
  • A gas does 800 J of work to expand and push a piston. If the total energy of the gas does not change, what is the heat for this process? Take the bold work to be the system.

  and

  

  

  

  

  • Sodium dimer (Na2) has a vibrational constant of 159.13 cm-1. Calculate the vibrational partition function of Na2 to three significant figures at 300 K. The degeneracy is 1.

  

  

  

  • Calculate the work done (in J) when the volume of an ideal gas changes from 1.00 L to 3.00 L at an initial temperature of 25 degrees celsius and at a constant pressure of 1 bar.

Values:

P= 1bar (100,000 Pa)

Vi= 1.00 L (0.001 m3)

Vf= 3:00 L (0.003 m3)

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