The reaction of 2.30g N2 with excess H2 produces 2.00g NH3. The percent yield of this reaaction is?

Answer 1

percent yield = (actual yield/theoretical yield)*100 = ?
2.00 g is given in the problem as the actual yield. You must calculate the theoretical yield. The easy way to do that is with a planned approach to stoichiometry problems. Here is a step by step procedure.
http://www.jiskha.com/science/chemistry/stoichiometry.html