Final answer:
Wet chemical containers and expellant gas assemblies should be located in a separate storage room to ensure safety.
Step-by-step explanation:
Wet chemical containers and expellant gas assemblies should be located in a separate storage room. This is because these materials can pose a safety risk and should be stored away from areas where they could potentially be ignited or cause harm. Storing them in a separate storage room ensures that they are kept in a designated location where they can be properly controlled and accessed as needed.