In: Chemistry
What are the empirical formulas of substances with the following mass percent compositions?
(a) aspirin 4.48% H, 60.00% C, 35.52% O
(b) ilmenite (a titanium-containing ore) 31.63% O, 31.56% Ti, 36.81% Fe
(c) sodium thiosulfate (photographic "fixer") 30.36% O, 29.08% Na, 40.56% S