No-one did! A guy called Daniel Fahrenheit proposed a temperature scale where one of the reference points was the temperature of the boiling point of water which he arbitrarilly set at 212 degrees or more precisly 2120F
This scale is now only used in the US the rest of us have switched to Celsius (often called centigrade) where the boiling point of water is 1000C
Water boils at 212 degrees Fahrenheit at sea level.
At STP (that's your next question) water boils at 212 degrees and freezes at 32 degrees.
Boiling point is a physical property.
This is the Fahrenheit temperature scale.
The Fahrenheit scale has water boiling at 212 degrees. 100 degreesCelsius/Centigrade.
Water boils at 212 degrees Fahrenheit. 100 degrees Celsius
Water boils at 212 degrees Fahrenheit
212 degrees at which water boils
Water boils at 212 degrees Fahrenheit
It boils
212 degrees at which water boils
At 212 oF, water boils at 1 atm of pressure.
Water boils at 212 degrees Fahrenheit at sea level.
No, water freezes at 32 degrees and boils at 212.
Water boils at that temperature.
212 D at which W B - 212 degrees at which water boils.
Pure water boils at 212ºF when standard atmospheric conditions exist. Standard conditions are sea level with the baometer reading 29.92 in. Hg (14.696 psia).