Determine the percent yield for the reaction between 276.94 g of Sb2S3 and excess oxygen if 59.19 g of Sb4O6 is recovered along with an unknown amount of sulfur dioxide gas. (include 2 decimal places in your answer)

Answer 1

I worked this problem, but with different numbers, several years ago. Just follow the steps but substitute the number in your problem. Post your work if you have any problems.
https://www.jiskha.com/questions/81919/determine-the-percent-yield-for-the-reaction-between-98-7g-of-sb2s3-and-excess-oxygen-gas