A cylinder with a heavy piston, located vertically, filled with oxygen, the mass of which 10, after raising the temperature to 50 K, the piston has risen to a height of 7 cm. Find the M mass of the piston, if the gas pressure above the piston 0.1 MPa. The area of the piston of 100 cm ^ 2. The molar mass of oxygen of 0.032 kg / mol.
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