avanelson01
24.01.2021 •
Chemistry
A sample of nitrogen gas expands in volume from 16 L to 5.4 L at constant
temperature. Calculate the work done in joules if the gas expands (a) against
a vacuum, (b) against a constant pressure of 0.80 atm.
Please answer if yk
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Ответ:
a. W = 0 J
b. W = - 308.028 J
Further explanationGiven
Nitrogen gas expands in volume from 1.6 L to 5.4 L
Required
The work done
Solution
Isothermal :
W = -P . ΔV
Input the value :
a. At a vacuum, P = 0
So W = 0
b. At pressure = 0.8 atm
W = - 0.8 x ( 5.4 - 1.6)
W = -3.04 L.atm ( 1 L.atm = 101.325 J)
W = - 3.04 x 101.325
W = - 308.028 J
Ответ: