If you are boiling water at 100 feet below sea level, you must be in a submarine.
The interior pressure of a submarine is about sea level, so water would boil at 212F or 100C.
Another Answer
The submarine answer above is quite correct. Most submarines run near sea level pressure on the inside because otherwise you would have an issue with the bends upon surfacing and opening a hatch.
However, let's consider an air filled chamber that is 100 feet below sea level, and that is equalized so that the air pressure inside is the same as the water pressure outside. Actually, such chambers do exist - take for example the 100- foot submarine escape training towers at HMNB Portsmouth, HMAS Stirling on Garden Island, and New London CT, among others.
We know that the pressure of water at some depth is given by p = gdh, where p is pressure, g is gravity, d is density, and h is depth. Plug in for 100 feet (about 30 meters) and you get (9.81 m s-2) (1 g m-3) (30.48 m) or 299 kg s-2 m-1, or 299 KPa.
Now, to find the boiling point of water at 299 KPa, we consult the steam table for water, and we discover that water boils there at about 132 C, or about 270 F.
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Water will boil at a lower temperature 2 miles below sea level due to the increase in pressure. Generally, water boils at approximately 250°F at that depth, but it can vary slightly depending on other factors.
At 10,000 feet below sea level in the ocean, the temperature hovers at about 4 degrees centigrade. On solid ground, at 10,000 feet down, the rock is hot enough to boil water.
At 100 deg C.
Water will boil at a lower temperature in a town located at 1000m above sea level, typically around 95°C instead of the standard 100°C at sea level. This is because atmospheric pressure decreases with higher elevations, causing water to boil at a lower temperature.
100 degrees celsius at sea level.
212 degrees Fahrenheit and 100 degrees Celsius, at sea level
Water will boil at a lower temperature in a town located at 1000 m above sea level compared to sea level. On average, water boils at around 98.4 degrees Celsius at this elevation due to the decrease in atmospheric pressure.
Water boils at 100 degrees Celsius at sea level, or at standard atmospheric pressure.
First understand that the boiling of water occurs when the energy of water molecules is equal to the vapour pressure... (i.e energy of water is equal to the external pressure due to the atmosphere)... above sea level the atmospheric pressure is lower hence low energy is required... hence water boil at low temperature...
At high altitudes, the air pressure is lower, which causes water to boil at a lower temperature. This is because the lower pressure reduces the amount of energy needed for water molecules to escape into vapor form, making it boil at a lower temperature than at sea level.
No, water boils at 212°F (100°C) at sea level under standard atmospheric pressure. If the pressure is lower than standard, water can boil at a lower temperature.
The Dead Sea is below mean sea level for the earth; therefore, the pressure at the Dead Sea would be greater than at mean sea level and the boiling point of water would be above 100C.