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Stray Question: Water

Assume I have a steel box of fixed size. I fill the box completely with water, at room temperature. I then place the steel box inside a freezer for 24 hours.

  1. Assuming the steel box remains intact and at its initial fixed size, does the water freeze? If it cannot expand, can it freeze?
  2. What is the temperature of the water in the centre of the box?
  3. If I suddenly opened the box, what would happen to the water?

No idea why this occurred to me.

 
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