A vessel with a capacity of 2V=200 cm3 is divided in half by a semi-permeable partition. One half contains m1 = 2 mg of hydrogen and m2 = 4 mg of helium. Only helium can diffuse through the partition. During the process, the temperature is maintained at T = 27° K. What pressures P1 and P2 will be established in both parts of the vessel?

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