What is the standard atmospheric pressure in Pa?

1 standard atmospheric pressure =1.01325×10.5pa (Pa)

Standard atmospheric pressure is the pressure at sea level under standard atmospheric conditions, which was put forward by physicist Torricelli at 16438+0.325 kpa, and its value is 10 1.325kPa, which is the unit of pressure and is recorded as atm.

In chemistry, the standard temperature and pressure (STP) was once defined as 0 C (273.15k) and101.325kpa (1ATM), but starting from 1982, IUPAC will

1 standard atmospheric pressure = 760mmhg = 76cmhg =1.01325x105pa =10.339m water column.

1 standard atmospheric pressure = 10 1325 N/㎡. (In calculation, it is usually 1 standard atmospheric pressure =1.01×105n/㎡). 100 kpa = 0. 1 MPa

Extended data:

Life application of standard atmospheric pressure;

1. pressure cooker (the pressure cooker is sealed with air. When the air in the pressure cooker is heated, the pressure of the gas in the cooker increases, which makes the water in the cooker boil at a higher temperature, thus making it easier to cook food.

2. Vacuum sucker (you can press on the wall by external atmospheric pressure, and you can hang things.

3. Cupping therapy (Chinese medicine has a kind of glass jar, which quickly presses on a certain part of the human body when heated. After the air in the jar is cooled, it will be pressed against the skin by the external air pressure. At this time, pulling out the glass jar will suck harmful and toxic blood from the human body, which is conducive to rehabilitation)

4. Aircraft flying (The upper part of the aircraft wing is streamlined. When air flows on the wing, some air flows on the wing and some air flows under the wing. Because the upper part of the wing is streamlined, the speed of air flowing through different distances in the same time is different, and the air speed above the wing is higher and the atmospheric pressure is lower;

The bottom is very flat, the air velocity is small, and the atmospheric pressure is high, so. When the aircraft is traveling at high speed, the atmospheric pressure under the wing is high, while the atmospheric pressure above the wing is low. The pressure difference between the upper and lower wings makes the aircraft gain lift.

References:

Baidu encyclopedia-standard atmospheric pressure