Why do onions lose mass when soaked in concentrated solutions of sodium chloride?​

Osmosis and also a bit of simple diffusion

Explanation:

Since inside the onion has water content also, since outside is more concentrated, the water content inside of the onion will move out into the outside to make the outside less concentrated. So as water leaves the onion, the onion mass reduces

yes it is   dangerous

explanation:

because that foot is discusting and could get you sick

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called