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23 Nov 2019

Mars has an atmosphere composed almost entirely of carbon dioxide,with an average temperature of -63 degress C.
What is the rms speed of a molecule in Mars's atmosphere?

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Deanna Hettinger
Deanna HettingerLv2
9 Apr 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

The Earth's atmosphere consists primarily of oxygen (21%) 30 and nitrogen (78%). The rms speed of oxygen molecules (02) in the atmosphere at a certain location is 535 m/s.

(a) What is the temperature of the atmosphere at this location?

(b) Would the rms speed of nitrogen molecules (N2) at this location be higher, equal to, or lower than 535 m/s? Explain.

(c) Determine the rms speed of N2 at his location. 

Near the surface of Venus, the rms speed of carbon dioxidemolexules(CO2) is 760 m/s.What is the temperature (in kelvins) ofthe atmosphere at thatpoint?
1 K


14.1 a) The atmospheric pressure of Mars is about 600 Pa and thesurface temperature varies from -30 °C to -100 °C. The atmosphereof the planet is 95.3% carbon dioxide (CO2) and about 0.03% watervapor. The polar ice caps contain both CO2 ice and water ice. Couldthere be liquid CO2 on the surface of Mars? Could there be liquidwater? You need to provide quantitative justifications for youranswers. (What is
the key piece of data you need for your conclusion?) For more onwater on Mars, see
http://www.daviddarling.info/encyclopedia/M/Marsatmos.html
http://www.timesonline.co.uk/tol/news/science/space/article6849802.ece

b) What is the escape speed from the Earth? A gas moleculetravelling away from Earth near the outer boundary of the Earth’satmosphere would, at this speed, be able to escape from the Earth’sgravitational field. At what temperature is the rms speed of (i)oxygen molecules, and (ii) helium atoms equal to the escape speed?(iii) Can you see why our atmosphere contains oxygen but nothelium?

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