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What is the value of the work interaction in this process?

a. -272 kJ/kg
b. -32 kJ/kg
c. 31 kJ/kg
d. 272 kJ/kg


Sagot :

Answer:

The answer is "[tex]-121\ \frac{KJ}{Kg}[/tex]".

Explanation:

Please find the correct question in the attachment file.

using formula:

[tex]\to W=-P_1V_1+P_2V_2 \\\\When \\\\\to W= \frac{P_1V_1-P_2V_2}{n-1}\ \ or \ \ \frac{RT_1 -RT_2}{n-1}\\\\[/tex]

[tex]W =\frac{R(T_1 -T_2)}{n-1}\\\\[/tex]

    [tex]=\frac{0.287(25 -237)}{1.5-1}\\\\=\frac{0.287(-212)}{0.5}\\\\=\frac{-60.844}{0.5}\\\\=-121.688 \frac{KJ}{Kg}\\\\=-121 \frac{KJ}{Kg}\\\\[/tex]