To calculate the percent yield of the product, you can use the following formula:Percent Yield = Actual Yield / Theoretical Yield x 100In this case, the actual yield is 12 grams, and the theoretical yield is 15 grams. Plugging these values into the formula:Percent Yield = 12 / 15 x 100Percent Yield = 0.8 x 100Percent Yield = 80%So, the percent yield of the product is 80%.