Allicin (c6h10os2) contains 59.9 g of carbon, 21.7 g of hydrogen, 24.4 g of oxygen, and sulfur. what is the mass percent of sulfur in a 162 g sample of the compound?

The molar mass of Allicin is 162 which means that you can just divide 64 by 162 since 64 is the mass of sulfur in 1 mole of Allicin (32×2=64).  You should get 0.395 which is 39.5%.

I hope this helps.  Let me know in the comment if anything is unclear.  Also, were you supposed to use the values of carbon, hydrogen, and oxygen given?  I didn't use them because I can't figure out how they can be the right ratios.  162 grams of Allicin should contains 72g of carbon, 10g of hydrogen, 16g of oxygen, and 64g of sulfur.

D. is the answer hope that you