0.9 mol of an ideal gas initially at 19 âC and 1.15 bar pressure are heated to a final temperature of 330 âC at constant pressure. The Cv,m of this gas is 3.3R.
Part A - Calculate the initial volume of the gas.
Express your answer in m3 .
Vi =
m3
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Part B - Calculate the final volume of the gas.
Express your answer in m3 .
Vf =
m3
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Part C - Calculate the work done on/by the gas.
Express your answer in kJ. Pay attention to the sign!
w =
kJ
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Part D - Calculate the change in internal energy.
Express your answer in kJ. Pay attention to the sign!
ÎU =
kJ
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Part E - Calculate the heat absorbed/released by the gas.
Express your answer in kJ. Be careful with signs!
q =
kJ
0.9 mol of an ideal gas initially at 19 âC and 1.15 bar pressure are heated to a final temperature of 330 âC at constant pressure. The Cv,m of this gas is 3.3R.
Part A - Calculate the initial volume of the gas.
Express your answer in m3 .
| |
| Vi = |
| m3 |
SubmitMy AnswersGive Up
Part B - Calculate the final volume of the gas.
Express your answer in m3 .
| |
| Vf = |
| m3 |
SubmitMy AnswersGive Up
Part C - Calculate the work done on/by the gas.
Express your answer in kJ. Pay attention to the sign!
| |
| w = |
| kJ |
SubmitMy AnswersGive Up
Part D - Calculate the change in internal energy.
Express your answer in kJ. Pay attention to the sign!
| |
| ÎU = |
| kJ |
SubmitMy AnswersGive Up
Part E - Calculate the heat absorbed/released by the gas.
Express your answer in kJ. Be careful with signs!
| |
| q = |
| kJ |
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Related questions
| pV work - Exercise 2 This problem continues Exercise 1. However, note that the initial volume and temperature may have changed due to variable randomization. Pay attention to the values stated below and use them in all your calculations for this excercise. In exercise 1 the piston was allowed to move freely. Now, you put stoppers on the piston so it cannot move up or down.
Remember to use three significant figures for all numerical answers. The margin of error for each numerical answer is 5%. To avoid rounding errors use the unrounded intermediate values in your final calculations. The initial volume of gas is 4.20 L , the initial temperature of the gas is 32.0 °C , and the system is in equilibrium with an external pressure of 1.2 bar (given by the sum of a 1 bar atmospheric pressure and a 0.2 bar pressure due to a brick that rests on top of the piston). Then, as you did in Exercise 1, you heat the gas slowly until the temperature reaches 57.2 °C | Part A How many moles of gas are there in the container?
SubmitMy AnswersGive Up Part B What is the final volume after you reach the final temperature?
SubmitMy AnswersGive Up Part C What is the final pressure after you reach the final temperature?
SubmitMy AnswersGive Up Part D What is the sign of w? What is the sign of w?
SubmitMy AnswersGive Up Part E What is the value of w?
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