If you have a half-filled bottle of water with 50 mL in it and you freeze it, what will be the volume of the water when it melts?

This is a mixture that has the same composition throughout.

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have