Final exam

a) When you balance the reaction, it becomes:

2 CO + 2 NO 2 CO2 + N2

Using Avagadro's Number, convert molecules of CO to mol of CO:

5.19 x 10^22 molecules divided by Avogadro's number (6.022 x 10^23 molecules per mol) yields 0.0862 mol CO

According to the balanced reaction, for every 2 mol of CO consumed, 1 mol of N2 is produced.  Assuming NO(g) is in excess and all CO is consumed to produce the maximum theoretical yield, there should be 0.0431 mol of N2 producd.

Convert mol of N2 to grams of N2 by multiplying 0.0431 mol of N2 by the molecular weight of N2 (which is 28.02 g/mol) to convert units into grams, yielding the answer to be 1.21 grams of N2 produced.

b)   CO is Carbon Monoxide
        NO is Nitrogen Monoxide
   CO2 is Carbon Dioxide
   N2 is Elemental/Natural Nitrogen