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To calculate how much work a gas has done (or has done to it) against a constant external pressure, we use a variation on the previous equation: work = w = − P external × Δ V where P external is the external pressure (as opposed to the pressure of the gas in the system) and Δ V is the change in the volume of the gas, which can ...
W = pΔV. Where: W = work done (J) p = pressure of gas in piston (Pa) ΔV = change in volume of gas (m 3) This is assuming that the pressure of the gas in the piston p does not change as the gas expands. When the gas expands ( V increases), work is done by the gas.
We can use the definition of the work done by an ideal gas, substitute the pressure by a function of the volume and use the givens for the volumes to calculate the work. The work is the blue hatched area under the curve which represents the process between state A and B in the figure below:
Describe how pressure, volume, and temperature relate to one another and to work, based on the ideal gas law; Describe pressure–volume work; Describe the first law of thermodynamics verbally and mathematically; Solve problems involving the first law of thermodynamics
3 sty 2022 · In this post, we will discuss how the P-V diagram can help us to calculate the work done by a system or on a system. We will derive the equation of work done in terms of pressure and volume. We will solve a few numerical problems as well based on P-V diagrams.
(a) An ideal gas with a volume of 0.1 m 3 expands at a constant pressure of 1.5x10 5 Pa to treble its volume. Calculate the work done by the gas. Work done = 1.5x10 5 x(0.3 - 0.1) = 3x10 4 J.
3 dni temu · This ideal gas law calculator will help you establish the properties of an ideal gas subject to pressure, temperature, or volume changes. Read on to learn about the characteristics of an ideal gas, how to use the ideal gas law equation, and the definition of the ideal gas constant.
