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Q.

Five moles of hydrogen is heated through 20K under constant pressure. If R = 8.312 J/mol/K, then find the external work done in joule.
[Round-off to the nearest integer]

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answer is 831.

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Detailed Solution

$d W = P d V = n R d T$

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Five moles of hydrogen is heated through 20K under constant pressure. If R = 8.312 J/mol/K, then find the external work done in joule.[Round-off to the nearest integer]