Not that long, use it as soon as you can. After maybe two hours it will be drier and sour.
I have no idea at all what your question means. Take a piece of iron and put it in a room whose temperature is 32 degrees, and before long the iron's temperature will be 32 degrees. Put a piece of iron into a room that is at 105 degrees, and before long the iron's temperature will be 105 degrees.
yesdefiantly, as temperature increases lemon juice becomes moreacidic than it was at room temperature.
it is in solid state
So long as it was kept at room temperature, it should be fine to eat after it was left out overnight.
red
If the room temperature is cooler then you are. it is because metal is a good conductor of heat. When you put your hand on the metal it immediately starts to draw heat away from your hand this gives you the impression that it is cooling you, which it is. If you do the same with a piece of wood it is not able to draw the heat away from you be cause it is a reasonable insulator.
at room temperature about 4 hours
Butter can last for days at room temperature. But it is not recommended to leave it out for that long.
The temperature of the water will be the ambient (room) temperature. A broken piece of cutlery makes no difference to the temperature.
not too long
After an hour or so at room temperature, meat should be cooked.
Either it is at 390°C or at room temperature. It can't be both.