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Auerbach attributes the Mpemba effect to differences in the behaviour of supercooled formerly hot water and formerly cold water. Chown, Marcus (June 2006). "Why water freezes faster after heating". New Scientist. Conover, Emily (2017). "Debate heats up over claims that hot water sometimes freezes faster than cold". Science News. 191 (2): 14
Cold water does not boil faster. Water boils when it reaches its boiling point of 212 degrees Fahrenheit, 100 degrees Celsius or 373 degrees Kelvin.
Water boiling at 99.3 °C (210.8 °F) at 215 m (705 ft) elevation. The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid [1] [2] and the liquid changes into a vapor. The boiling point of a liquid varies depending upon the surrounding environmental pressure.
Boiling is the method of cooking food in boiling water or other water-based liquids such as stock or milk. [13] Simmering is gentle boiling, while in poaching the cooking liquid moves but scarcely bubbles. [14] The boiling point of water is typically considered to be 100 °C (212 °F; 373 K), especially at sea level.
The boiling water trick is one of the more popular experiments featured on social media during cold weather. As experimenters throw steaming water, a white cloud is left behind. "The boiling water ...
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In fact, the hot water will always be playing catch-up with the cold water." So this effect is actually only that hot water cools at a faster rate than the cold water, and not that the total elapsed time until freezing is never less with the hot water? I don't see how that would be counterintuitive.
Salt water gargles If you’re dealing with a sore throat, gargling with salt water — mixing ½ teaspoon of salt into 1 cup of warm water — is a simple, natural remedy that may bring some relief.