A sample of 257.0 mL of wet nitrogen gas was collected over water at a total pressure of 759 torr and a temperature of 21.0 °C. (The vapor pressure of water at 21.0 °C is 18.7 torr.) The nitrogen was produced by the reaction of sulfamic acid, HNH2SO3, with 386.7 mL of a solution of sodium nitrite according to the following equation. NaNO2 + HNH2SO3→ N2 + NaHS04 + H20 Calculate what must have been the molar concentration of the sodium nitrite.

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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.