Consider the arrangement of bulbs shown in the drawing. Each of the bulbs contains a volume of gas as shown. PN₂ = 680. torr, PNe = 208 torr, and PH₂ = 406 torr. What is the pressure of the system when all the stopcocks are opened, assuming that the temperature remains constant? (We can neglect the volume of the capillary tubing connecting the bulbs.) Answer: Volumes: N2 = 1.0 L Ne = 1.0 L H2 = 0.5 L torr

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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.