What will happen to the mass of the tank the next day when it was warmer?

Three cups of the same size are filled with the same mass of fresh water. One cup is put in a bucket of ice water so the water becomes cold, but does not freeze. One cup is heated so the water becomes hot, but does not boil. One cup is left at room temperature. At the macroscopic level, what someone can see with just their eyes, there appears to be very little difference in the volume of water between the three cups. However, at the molecular level, there is a difference in volume.

Explanation:

If its a water tank it will expand. most anything else and it will shrink

Explanation:

That's just how life works

most community's take hundreds of years to become stable