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A piston has an external pressure of 9.00 bar. How much work has been done in joules if the cylinder goes from a volume of 0.150 litres to 0.510 litres. Express your answer with the appropriate units.

A piston has an external pressure of 9.00 bar. How much work has been done in joules if the cylinder goes from a volume of 0.150 litres to 0.510 litres. Express your answer with the appropriate units.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The joule (J) is a unit of energy. Recall that energy may be converted between many different forms such as mechanical energy, thermal energy (heat), chemical energy, electrical energy, and light. The mechanical energy produced by a system is called work. When work is accomplished through the changing volume of a gas, it is called PV work and is given by the formula w = -PAV, where w is the work, P is the external pressure, and AV is the change in volume. If the volume change and pressure are in litres and bars respectively, then the work will have units of litre-bars, which can be converted to joules using the conversion factor 1 L bar = 100 J. Work can also be expressed as force multiplied by distance: w = F x d, where w is the work in joules, F is the force in newtons, and d is the distance in metres. Note that 1 N·m = 1 J.
Transcribed Image Text:The joule (J) is a unit of energy. Recall that energy may be converted between many different forms such as mechanical energy, thermal energy (heat), chemical energy, electrical energy, and light. The mechanical energy produced by a system is called work. When work is accomplished through the changing volume of a gas, it is called PV work and is given by the formula w = -PAV, where w is the work, P is the external pressure, and AV is the change in volume. If the volume change and pressure are in litres and bars respectively, then the work will have units of litre-bars, which can be converted to joules using the conversion factor 1 L bar = 100 J. Work can also be expressed as force multiplied by distance: w = F x d, where w is the work in joules, F is the force in newtons, and d is the distance in metres. Note that 1 N·m = 1 J.
Part A A piston has an external pressure of 9.00 bar. How much work has been done in joules if the cylinder goes from a volume of 0.150 litres to 0.510 litres. Express your answer with the appropriate units. • View Available Hint(s)
Transcribed Image Text:Part A A piston has an external pressure of 9.00 bar. How much work has been done in joules if the cylinder goes from a volume of 0.150 litres to 0.510 litres. Express your answer with the appropriate units. • View Available Hint(s)
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