It rots faster in a container because a sandwich bag holds the moister in.
You can store a sandwich in a plastic container with a lid or in a sandwich bag or zip-lock bag.
I normal Tupperware container lasts the longest. Second longest would be a fold over sandwich bag. The quickest is the Ziploc sandwich bags.
Within hours. Same with cookies. If you leave a sandwich out in room temperature for a few hours. It will be stale when you go to eat it. The amount of time varies with the temperature and humidity of the room. A humid room will stale bread slower than in a drier, cooler room.
Bread gets mold faster in a zip lock bag because when you close the bag it traps air inside and the air the bread is pushing out comes back to the bread and causes it to spoil and get mold. If you put a piece of bread in the bathroom it has space to release the air.
Yes, because the fungus may have multiplied in the bag and has grown and will infect the new bread faster.
Depends on how well sealed it is and the temperature
To keep a sandwich warm, you can wrap it in aluminum foil and place it in an insulated lunch bag or container. Another option is to use a thermos to keep hot ingredients warm until you're ready to eat the sandwich.
Mould will grow faster in a plastic bag if it's not kept refrigerated. If it's left in a paper bag, it will firstly go crusty, then mouldy but the plastic bag option will make it go mouldy faster because of the condensation which is produced. I work in a bakery.
It might depend on what you have in your sandwich and how big your bag of chips is.
A bread bag A wrapper And if it is a solid bag, a bread bin.
bag of bread
To prevent bread from going stale, store it in a sealed plastic bag or airtight container at room temperature. You can also freeze bread to keep it fresh for longer periods of time.