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.
100 degrees Celsius or 212 degrees Fahrenheit
Water boils at 100 degrees Celsius (212 degrees Fahrenheit) at normal atmospheric pressure.
Hot water boils at 212 degrees Fahrenheit or 100 degrees Celsius at sea level.
Water boils at 212 degrees Fahrenheit. 100 degrees Celsius
No, water freezes at 32 degrees and boils at 212.
212 degrees at which water boils
"Turning to vapor" is a description of boiling. At normal conditions, water boils at 212oF.
32 degrees is freezing and 212 degrees is boiling.
Water boils at 212 degrees Fahrenheit, or 100 degrees Celsius, or 273 Kelvin.
Water boils at 212 degrees Fahrenheit at sea level.
212 degrees at which water boils
At 212 oF, water boils at 1 atm of pressure.
Water boils at 212 degrees Fahrenheit.
Water boils at 100 degrees Celsius, which is equivalent to 212 degrees Fahrenheit.
Water boils at 100 degrees Celsius or 212 degrees Fahrenheit.