If refrigerated, maybe upwards of a week.
about 3-5 days depending on how you store it
The effervescence will tend to dissipate, but the remaining still wine will still be good.
Wine that's been open for that long is fairly likely to have "turned" ... become vinegar. If you like drinking red wine vinegar, I suggest you just go buy a bottle of that instead.
Not sure how good chocolate wine is before opening...
Yes, tannins provide flavor and long life to a wine.
A bottle of an opened white wine is OK for about a week. A bottle of an opened red wine can last about a month. How do you put a spoon in a wine bottle?
Minutes, probably. Red wine should not be left unopened. The wine continues to oxydize. It should be sealed if not finished.
Not long in my house but it can stay open for weeks without ill effects to the wine or to you.
Far longer than bottled wine. Keep it in the fridge and you should be good for 2-3 weeks.
Although drinking wine and other alcoholic beverages in moderation is good for health and long life, it is not recommended for gout.
No. It is the worst wine and not good
It depends on what sort it is. There are quite a few variables, but it should be good for several years unopened and in a cool, dry storage area. Once you open it, it should last for several months.