1-If an ideal gas starts at a temperature of 270 kelvin, a pressure of 100,000 p

Question

1-If an ideal gas starts at a temperature of 270 kelvin, a pressure of 100,000 pascals, and a volume of 0.006 cubic meters; what will be the new temperature if the gas is heated until it reaches 0.02 cubic meters without allowing the pressure to change?

2-

If a heat engine takes in 608 watts of heat from a source at a temperature 1,000 kelvin and dumps off 194 watts of heat to a heat sink at 300 kelvins. What is the efficiency of the heat engine?

3-0.6 cubic meters of gas increases pressure from 394,002 pascals to 101,000 pascals at a constant volume when heated. How much work (in joules) is done by the gas?

4-

If the air pressure is 1 atmosphere, what is the boiling point of fresh water on the Kelvin temperature scale?

5-

If a heat engine takes in 682 watts of heat from a source at a temperature 1,000 kelvin and dumps off 166 watts of heat to a heat sink at 300 kelvins, how much work can be done by the engine? Give your answer in watts.

Explanation / Answer

Since pressure is not changing, V/T will remain constant.

0.006/270=0.02/ T

T=900 K

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