Ahelium-filled balloon occupies a volume of 15 cubic meters at sea level. the balloon is released and raises to a point in the atmosphere where the pressure is .75 atm. what is its volume if the temperature remains the same?

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Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.

What structural formula represents 4 electrons shared between two atoms?