Answer
Please see the work below.
Work Step by Step
According to Dalton's law of partial pressure:
$P_T=P_{Ne}+P_{He}+P_{H_2O}$
We plug in the known values to obtain:
$745mmHg=P_{Ne}+368+28.3$
This simplifies to :
$P_{Ne}=349mmHg$
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.