As water has good thermal conductivity, putting the cup of hot water into cold water will cool down the fastest. The same goes when replacing the cup of hot water with hot eggs. However, heat conduction is based on temperature difference. heat transfer from the cup of hot water to the hot egg. One side is transmitted to the side with a lower temperature. The end effect of placing the cup of hot water in the cold water is that the water in the cup is the same temperature as the water. outside the cup, adding salt to cold water can increase the specific heat capacity of the water, allowing the cold water to absorb more heat when it heats up, allowing the hot water to be at a lower temperature at the end. of the cooling process.
There is a limit to the amount of salt that can be dissolved in cold water, reaching the saturation level can dissolve 36 to 40 grams of salt.However, eggs have a certain mass. Regardless of the density of the water, the buoyancy generated is equal to the weight of the salt water of the volume of the egg submerged in the water. There must therefore always be a certain volume of eggs. submerged in water to achieve these buoyant qualities, so the egg can never fully charge the water surface.