Some older fire extinguishers and dry-cleaning solvents contained chlorinated organic compounds that have since been phased out due to environmental concerns. One such compound has the following composition by mass:
Calculate the empirical formula of this compound. [Relative atomic masses: C=12\text{C} = 12C=12, H=1\text{H} = 1H=1, Cl=35.5\text{Cl} = 35.5Cl=35.5]
The relative formula mass (MrM_rMr) of this compound is 99. State its molecular formula.
