A piece of sodium metal reacts completely with water as follows: 2Na(s) + 2H,O(1) → 2N2OH(aq) + H;(g) The hydrogen gas generated is collected over water at 27.0°C. The volume of the gas is 179 mL measured at 0.983 atm. Calculate the number of grams of sodium used in the reaction. (The vapor pressure of water at 27.0°C = 0.0352 atm.)

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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.