Consider the reaction:  2 NiO(s)     ⟶     2 Ni(s)     +     O2(g) If O2 is collected over water at 35.0 oC and a total pressure of 755 mmHg, what volume of gas is collected for the complete reaction of 24.35 g of NiO? (The vapor pressure of water @ 35.0 oC is 42.23 mm Hg)

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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.