You have a bottle half with water and half with air. The environment is a vacuum that the bottle is in. The environment does have gravity.
So if we flipped the bottle so that the bottom of the bottle was facing up and the top of the bottle was facing down. If you open the bottle cap to try and remove the water, what would happen?
The aim is to know if the air in the bottle would expand (thus holding the bottles shape) or if the air would remain the same amount and just crunch the bottle; assuming that the water does come out.
My Assumption: I would think the water would not come out the bottle as the air is not able to expand. If you forced the water out the bottle (ie squeeze it out) then I would think that it would scrunch up as to not expand but to continue to occupy the same amount of space for the whole time. (further example at the bottom) When you do this same experiment where there is no vacuum (try this at home) when you tip the water out, there are bubbles that come up and replace the space that the water was occupying
FURTHER EXAMPLE: if we had a bottle that can hold up to 100 units of anything. We have 70 units of water in it and 30 units of air. If you tip the bottle and then open the cap (where outside the bottle has air) you would see that when the water leaks, the bottle holds only 60 units of water, so there will be bubbles that go up into the bottle to occupy the spare 10 units in the bottle. The question is to see what would be replacing that 10 units in the bottle where there is a vacuum outside the bottle.