4(a) Why doesn't the water flow out when the hand that presses the cardboard is removed? * 1. water inside glass is lighter
2. there is much water inside the glass
3. cardboard is supported by air pressure
4.
cardboard is strong enough to hold the water

solute : a solute is a substance that is dissolved in another substance is known as a solvent. it is mixed with a special mixture know as homogeneous mixture.

solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.

i think its 100

i hope this !