A cylinder contains oxygen gas at a temperature of 7ºC and a pressure of 15 atm in a volume of 100 L.  A fitted piston is lowered into the cylinder, decreasing the volume occupied by the gas to 80 L and raising the temperature to 40ºC. The gas pressure is now approximately a) 21 atm

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A: Given : V1 = 13.7 L = 13.7 x 10-3 m3 T1 = 20°C = 20 + 273 = 293 K T2 = 40°C = 40 + 273 = 313 K

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A: At constant temperature, the relation between the pressure and the volume of the gas is  PV = P' V'

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A: Condition to lower the pressure of 1.0 mole of an ideal gas in a 22.4 L container to absolute zero.

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Q: A3] a) Find the temperature of 1 mole of oxygen molecules if they occupy a volume of 4 L and have a…

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A: According to ideal gas equation PV = n RT

Diatomic Gas

Molecule, is a collection of two or more atoms together (which constitute the smallest observable unit) into a pure material. There are some ways to represent the structure of a molecule. Factor symbols represent atoms in Lewis structures, and dots represent electrons that accompany them. A pair of mutual electrons (covalent bond) may be represented by a single dash. The ball-and-stick model depicts the spatial structure of the atoms better.