Final answer:
The per cent yield calculation requires comparing the actual yield with the theoretical yield derived from stoichiometry based on the balanced equation for the reaction; however, the question omits necessary information to calculate the theoretical yield, making it impossible to determine the per cent yield.
Step-by-step explanation:
The question involves calculating the per cent yield of a chemical reaction, which is a fundamental concept in stoichiometry, typically covered in high school chemistry courses. To calculate the per cent yield, we need to compare the actual yield to the theoretical yield of a reaction. First, we would determine the theoretical yield by using stoichiometry. This would involve using the molar mass of oxygen to determine the moles of O2 and then using the balanced chemical equation for the reaction of O2 with ZnS to find the moles of SO2 that should be produced. The theoretical yield in grams is obtained by converting the moles of SO2 back to grams using the molar mass of SO2. With the actual yield given as 16.9g of SO2, the per cent yield is calculated using the formula:
Percent Yield = (Actual Yield / Theoretical Yield) x 100%
However, the question does not provide a balanced chemical equation or enough data to calculate the theoretical yield directly. Without this information, we cannot determine the per cent yield.