To calculate the percent yield, we first need to know the actual yield of sodium chloride produced in the reaction. The problem does not provide this information. Assuming you meant to provide the actual yield, I will use a placeholder value X grams for the actual yield.Percent yield = Actual yield / Theoretical yield x 100Percent yield = X grams / 34.0 grams x 100Once you have the actual yield value, you can plug it in for X and calculate the percent yield.