How do you calculate the percent by mass sulfur in sulfuric acid? Chemistry The Mole Concept Percent Composition 1 Answer anor277 Aug 18, 2016 #%S" in sulfuric acid"~=33%# Explanation: #"Percentage sulfur"# #=# #"Mass of sulfur"/"Mass of sufuric acid"xx100%# #=# #(32.06*g*mol^-1)/(98.08*g*mol^-1)xx100%=??# Answer link Related questions What is mole percent? Question #e2e8b Question #bc737 Question #bc73b Question #e2e8f Question #b9857 Question #b985b Question #fee41 Question #c5c01 Question #bc73f See all questions in Percent Composition Impact of this question 17420 views around the world You can reuse this answer Creative Commons License