3. A 2.5-L flask at 15°C contains a mixture of Na, He, and Ne at partial pressures of 0.32 atm for N2, 0.15 atm for He, and 0,42 atm for Ne. (a) Calculate the total pressure of the mixture. (b) Calculate the mole fraction of each gas.

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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.