Answer
See answer below.
Work Step by Step
Same energy:
$68.5\ J= 43.7\ J/L\times V$
$V=1.57\ L$
Carbon dioxide:
$1.57\ L\times 2.20\ kg/L=3.45\ kg$
Ethanol produces more carbon dioxide in this scenario.
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.