미해결 질문We dissolve 2.45 g of sugar in 200.0 g water. what is the mass percent of sugar in the solution?1921views
미해결 질문A 500 gram iron ore sample was determined to contain 242 grams of iron. What is the mass percent of iron in the ore?1283views
미해결 질문A 69.5 g sample of the compound X3O4 contains 19.2 g of oxygen atoms. What is the molar mass of element X?1684views
미해결 질문Calculate the percent composition by mass of each element in Al(OH)3. Use at least three significant figures.1670views
미해결 질문Aspirin is a compound with the molecular formula C9H8O4. What is its percent composition?1912views
미해결 질문Calculate the mass percent composition of nitrogen in each of the following nitrogen compounds.1131views