Skip to content

Help Zone

Student Question

Secondary V • 8mo.

Hello,

What is the normal atmospheric pressure?

Chemistry
avatar
avatar

{t c="richEditor.description.title"} {t c="richEditor.description.paragraphMenu"} {t c="richEditor.description.inlineMenu"} {t c="richEditor.description.embed"}

Explanations (1)

  • Explanation from Alloprof

    Explanation from Alloprof

    This Explanation was submitted by a member of the Alloprof team.

    Options
    Team Alloprof • 8mo.

    Hi NaiveAbafar3712,

    Thanks for reaching out! Let me help you. 

    The atmospheric pressure corresponds to the air pressure at any point on Earth. To measure the atmospheric pressure, we use a barometer.

    The normal atmospheric pressure at the sea level is 101,3 kPa (101,3 kPa = 1 atm = 760 mmHg).

    Finally, on Earth, the atmospheric pressure varies. Effectively, the higher in altitude, the lower the pressure because air is rarer at high altitudes, and there are undeniably fewer gas molecules per unit volume. 

    Hope that helps! 

    Emilie