standard temperature and pressure
  • noun the standard conditions used as the basis for comparing thwe proeties of gases.
  • A temperature of 0 °C, and a pressure of 1 atmosphere. Used, for instance, as a practical and easily maintained condition for laboratory experimentation.
  • An established combination of temperature and pressure, such as of 25 °C and 1 atmosphere, utilized for any given setting or purpose.
  • synonym standard conditions

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