Answer
$240.\text{ torr}$
Work Step by Step
$P_1V_1=P_2V_2$
$360.*2.00=P_2*3.00$
$P_2=240.\text{ torr}$
Partial Pressure of $N_2$ = 320.-240.=80. torr
$P_1*1.00=80.*3.00$
$P_1=240.\text{ torr}$
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