The van der Waals constants a and b are 5.489 L2 atm mole-1 and 0.0638 L mole-1 for C2H6. (a) Calculate the pressure (atm) of a 10.0 mole sample of C2H6 in a 4.86 L flask at 300.0 K. (b) Compare this value if the pressure is calculated under ideal conditions. Does this show a positive or a negative deviation from ideal gas behavior?

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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.