Acompound contains only carbon, hydrogen, and oxygen. combustion of 10.68mg of the compound yields 16.01 mg co2 and 4.37 mg h2o. the molar mass of the compound is 176.1g/mol. what are the empirical and molecular formulas?

An unknown substance is a white solid at room temperature and has a melting point of 78 °c. which of the following substances is most likely to be the identity of the unknown sample? a. naphthalene, a molecular solid with the formula c10h8 b. silica, a network solid held together by covalent bonds with the formula sio2 c. calcium chloride, an ionic compound with the formula cacl2 d. water, an molecular compound with the formula h2o