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Definition. **The acronym STP stands for “standard temperature and pressure,” which is defined as having a temperature of 0 degrees Celsius and a pressure of 1 atmosphere.**

#### What does the STP stand for?

Up until the year 1982, standard temperature and pressure (STP) was specified as a temperature of 273.15 K (or 32 degrees Fahrenheit) and an absolute pressure of exactly 1 atm. Since 1982, standard temperature and pressure (STP) has been defined as a temperature of 273.15 K (or 32 degrees Fahrenheit) and an absolute pressure of precisely 105 Pa.

#### When referring to any gas, what is its STP?

Standard temperature and pressure (STP) is defined as exactly 100 kPa of pressure (0.986 atm), which corresponds to a temperature of 0 degrees Celsius (273 K)…. This allows for a very useful approximation: at standard temperature and pressure, one mole of any gas has a volume of 22.4 liters; to put it another way, the molar volume at STP is 22.4 liters per mole.

#### What exactly is STP, and why is it valuable?

In the field of chemistry, “STP” is an abbreviation that stands for “Standard Temperature and Pressure.” The most common application for STP is in the measurement of fuels, namely the density of gases. The standard pressure is 1 atmosphere, and the standard temperature is 273 kelvin (which translates to 0 degrees Celsius or 32 degrees Fahrenheit).

#### Just what is the STP?

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