(Solved): 13. A sample of pure compound is composed of \( 40.0 \% \) carbon, \( 6.7 \% \) hydrogen, and \( 5 ...

13. A sample of pure compound is composed of \( 40.0 \% \) carbon, \( 6.7 \% \) hydrogen, and \( 53.3 \% \) of oxygen. The molar mass of this pure compound is about \( 342.3 \) grams. Determine the empirical formula, the molar mass given by the empirical formula and the molecular formula.