if 15.5 g of dinitrogen dioxide is produced, what is percent yield

In order to calculate the percent yield, we need to know the theoretical yield and the actual yield.

The theoretical yield is the maximum amount of product that can be formed in a reaction, assuming complete conversion of the limiting reactant.

From the given information, we can't determine the theoretical yield or the actual yield. Therefore, without the additional information, we cannot calculate the percent yield.