What will happen to the mass of the egg placed in water? Will it gain or lose mass due to osmosis?
When an egg is placed in water, it will gain mass due to osmosis.
Osmosis is the process where solvent molecules, in this case water, move across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration. In the case of the egg, the semi-permeable membrane is the eggshell, which is porous and allows water molecules to enter.
Inside the egg, there are solutes such as proteins and salts, which create a higher solute concentration compared to the surrounding water. This difference in solute concentration causes water molecules to move into the egg through osmosis.
As a result, the egg will gain mass as water enters it, making it heavier than its initial mass when placed in water.