Question

If 25.0 g NO are produced, how many grams of nitrogen gas are used?

Answer 1

Using the stoichiometry of the reaction and the information provided in the question, the mass of N2 used is 11.62 g.

Chemical reaction

The term chemical reaction refers to the combiantion of two or substances to yiled one or more products. The reaction equation in this case is N2 + O2 --->2NO.

Now;

Number of moles of NO = 25g/30 g/mol = 0.83 moles

1 mole of N2 yields 2 moles of NO

x moles of N2 yileds 0.83 moles of NO

x = 0.415 moles

Mass of N2 = 0.415 moles * 28 g/mol = 11.62 g

Learn more about stoichiometry:

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