Answer:
To calculate the percent yield, you need to know the theoretical yield, which is the maximum amount of product that could be produced based on the starting materials and reaction conditions, and the actual yield, which is the amount of product that was actually obtained in the experiment. The percent yield is then calculated using the following formula:
Percent Yield = (Actual Yield ÷ Theoretical Yield) x 100%
In this case, we don't have information about the theoretical yield or the reaction conditions, but we know that only 44 grams of CO2 were produced. Without additional information, we cannot calculate the percent yield. The theoretical yield could be more or less than 44 grams, and the actual yield could also be more or less than the theoretical yield.
Therefore, we need more information to determine the percent yield.