as we know
P1 V1 = P2 V2
n R T1 = P2 V2
0.13* 8.314* (273 + 30) = P2 * 400
P2 = 8.1872* 10^5 Pa
P2 = 8.082 Pa
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0.13 mol of argon gas is admitted to an evacuated 50 cm container at 30 °C....
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