An unknown substance is reported to have the following composition: 21.2%N, 6.1%H, 24.2%S, and 48.5%O. If we assume there is 100 grams of the substance, how many moles of oxygen would there be?

Match the acid base pairs by arranging the acid name with the conjugate base formula. hydrogen carbonate hydrogen phosphate carbonic acid read water sulfuric acid phosphoric acid a. co32- b. hso4- c. hco3- d. po43- e. h2po4- f. oh-

What is the percent by mass of oxygen in fe2o3

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat