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# Help Zone

### Student Question

Postsecondary • 4mo.

The temperature of the atmosphere on Mars can be as high as 27 °C at the equator at noon, and the atmospheric pressure is about 8 mm Hg. If a spacecraft could collect 10. m3 of this atmosphere, compress it to a small volume, and send it back to Earth, how many moles would the sample contain?

Chimie

## Explanations (1)

• Explanation from Alloprof

Explanation from Alloprof

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

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Team Alloprof • 4mo.

Hi, i am not good in english, i'll answer in french, if you want to have it in english, please say it and someone will translate my answer.

Allo, ici on est dans la situation de la loi générale des gaz PV=nRT

R = 62,37 (L mm Hg )/mol K

P= 8 mm Hg

V= 10m3 --> 10 000 L

n= ?

T = 27°C --> 300K

Donc on isole n :

n= (PV)/(RT)

n= (8 mm Hg x 10 000 L)/([62,37 (L mm Hg )/mol K] x 300K)

Il te reste à résoudre mathématiquement.

Bonne soirée !