A bottle contains gas at 25C and 1.30 atm. A stopper closing the bottle is removed and the gas expands adiabatically against an external pressure P_ext = 1.00 atm until the pressure inside the bottle is the same as the external pressure. At that point the stopper is quickly replaced, and the bottle is allowed to warm up back to 25C. What is the final pressure of the gas inside the bottle, in atm? Assume C_V,m= 2.5R.

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.