The development of the Haber-Bosch process for manufacturing ammonia from elemental hydrogen and nitrogen was a major industrial revolution that had a significant effect during World War I. To maximize the percent yield, the reaction is carried out at 20.0 MPa and 450 ºC. Calculate the percent yield if 750 L of ammonia gas is collected when 25.7 kg of hydrogen gas is reacted with excess nitrogen gas. Hint: Write a balanced chemical equation first. Do not show your work in the space provided. Record only your final answer with the correct number of significant digits and the proper units.

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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.