3 Months
Refrigerated food can only go unrefrigerated for four hours.
Opened it will not last long before it dries out, but in plastic wrap or a container it will last about 5 days.
a very long time
5 months
Food can have bacteria grow on it as soon as an hour at room temperature. Our stomach acid can kill some of this bacteria.Leave food out no longer than a few hours if you do not want to get sick.
2 days
There's no way to tell without knowing how long it has been sitting unrefrigerated.
suprisingly not very long once opened. I think its a week.
If you half cook it first, over a year.
a week. don't eat it if it smells rotten to you though.
Apple will start to brown 10 minutes after it is sliced