Answer
$3.75\ mol\ O_2$
$2.5\ mol\ PbO$
$2.5\ mol\ SO_2$
Work Step by Step
From stoichiometry:
$2.5\ mol\times3_{O_2}/2_{PbS}=3.75\ mol\ O_2$
$2.5\ mol\times2_{PbO}/2_{PbS}=2.5\ mol\ PbO$
$2.5\ mol\times2_{SO_2}/2_{PbS}=2.5\ mol\ SO_2$
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.