Final answer:
HCFCs contain hydrogen, chlorine, fluorine, and carbon. They are used as refrigerants, propellants, and solvents, but their production has been phased out due to ozone depletion.
Step-by-step explanation:
HCFCs, or hydrochlorofluorocarbons, contain hydrogen, chlorine, fluorine, and carbon. They are fully or partly halogenated paraffin hydrocarbons and are commonly known by the DuPont brand name Freon.
HCFCs have been widely used as refrigerants, propellants, and solvents, but due to their contribution to ozone depletion, their manufacture has been phased out under the Montreal Protocol.
The question asks which elements HCFCs (hydrochlorofluorocarbons) contain. The correct answer is B) hydrogen, chlorine, fluorine, and carbon.
HCFCs are compounds derived from hydrocarbons where some hydrogen atoms have been replaced by chlorine and fluorine atoms. They are related to CFCs (chlorofluorocarbons), which instead do not contain hydrogen.
HCFCs have been used as refrigerants, propellants, and solvents but are being phased out due to their potential to deplete the ozone layer.