Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

What is the scientific justification for making Standard Temperature and Pressure certain data points?

According to NIST, STP is 68* F and 14.696 psi. Other organizations have their own. Is it a certain volume of a gas/solid/liquid?


Should have added this...Did someone take a gallon of water and it fit into a cubic foot box at a certain pressure/temp? Looking into why those numbers were chosen.

1 Answer

  • 1 decade ago
    Favorite Answer

    For proper comparison across the world we need to set what room temp is .

    STP is 20oC which is 68oF or 293oK and 1 atm[atmosphere, sea level] air pressure, also expressed in psi or mmHg or Torr

Still have questions? Get your answers by asking now.