Which of the following gases effuses most rapidly? Select one: a.Hydrogen chloride b.Oxygen c.Nitrogen d.Ammonia e.Carbon monoxide   Hydrochloric acid is prepared by bubbling hydrogen chloride gas through water. What is the concentration of a solution prepared by dissolving 225 L of HCl(g) at 37°C and 89.6 kPa in 5.25 L of water? a.1.66 M b.16.6  M c.1.49 M d.7.82 M e.12.5 M

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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.