This depends on many factors.
the water in the glass evaporates if the atmosphere temperature is at evaporating point of water
The water should evaporate if the glass was not covered.
At 85 degrees it would take ...TIME to evaporate. This technecly isn't incorrect
Why don't you try it and see?
Depending on the temperature, Yes.
If you mix water and salt and leave it for a week, the water will evaporate but the salt will remain. As the water evaporates, the salt crystals will gradually become more concentrated. Eventually, you will be left with a solid mass of salt crystals.
no it cant i might in maybe a week
The water is going to evaporate at some rate with or without a cover. You need to add water to the pool at least once per week. Evaporation rates without a cover would be close to 1.5" per week in most areas. k
No Pool water evaporates in one day or one week
A formula doesn't exist; this depends on the temperature, pressure, room volume, amount of water, etc.
The answer will depend on the temperature, relative humidity, wind speed as well as the shape of the cup (and therefore the surface area of the water). There are too many unknown variables to give anything like a reasonable estimate.
89% is used in a week.