Answer
$480\ \mu C$
Work Step by Step
The charge across $C_2$ is the same as $C_1$. That is:
$q_2 = q_1 = 480\ \mu C$
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.