HFA:
A) Is the abbreviation for hydrofluoroalkane
B) Replaced chlorofluorocarbons (CFCs) in inhalers in 2009
C) Is more expensive than CFC
D) All of the above statements are true

Question

Quizplus · Accepted Answer

Hydrofluoroalkane (HFA) is indeed the abbreviation for a group of compounds used as propellants in inhalers, which replaced chlorofluorocarbons (CFCs) due to environmental concerns, particularly the depletion of the ozone layer. HFAs tend to be more expensive than the CFCs they replaced, leading to an increase in the cost of inhalers that use them.