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Standard temperature and pressure

In chemistry, the term standard temperature and pressure (abbreviated STP) denotes an exact reference temperature of 0°C (273.14 K) and pressure of 1atm (defined as 101325 Pa).

These values approximate freezing temperature and atmospheric pressure at sea level.

See also:

standard state

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Standard temperature and pressure

... temperature and pressure In chemistry, the term standard temperature and pressure (abbreviated STP) denotes an exact reference temperature of 0°C ...