Airbags used in automobiles are inflated with nitrogen gas produced from the reaction of sodium azide (NaN3) and excess iron (III) oxide (Fe203) as shown in the following equation: 6NaN3(s) + Fe203 (s)→ 3Na20(s) + 2Fe(s) + 9N2(g) An inflated airbag contains 40.0 L of nitrogen gas at 1.10 atm and 25.0 °C. How many grams of sodium azide (molar mass = 65.011 g/mol) is consumed to form all the nitrogen in the presence of excess iron (III) oxide? a.126 g b.94.8 g c.117 g d.77.9 g

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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.