Open QuestionA 500 gram iron ore sample was determined to contain 242 grams of iron. What is the mass percent of iron in the ore?581views
Open QuestionA 69.5 g sample of the compound X3O4 contains 19.2 g of oxygen atoms. What is the molar mass of element X?773views
Open QuestionCalculate the percent composition by mass of each element in Al(OH)3. Use at least three significant figures.594views