Answer
16.6J/mol*k
Work Step by Step
$C_{v}=\frac{\Delta E_{int}}{n\Delta T}$
$\Delta E_{int}=n_{i}*C_{vi}*\Delta T(i=1,2,3)$
$C_{v}=16.6J/mol*k$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.