A 75.00-grams sample of an unknown compound contains 13.60 g of oxygen. What is the percentage by mass of oxygen in the compound?

A 75.00-grams sample of an unknown compound contains 13.60 g of oxygen. What is the percentage by mass of oxygen in the compound?

A 75.00-grams sample of an unknown compound contains 13.60 g of oxygen. What is the percentage by mass of oxygen in the compound? 




a. 88.60%
b. 61.40%
c. 0.18%
d. 18.13%




Answer: D