Problem: Mars has an atmosphere composed almost entirely of carbon dioxide, with an average temperature of -63°C.What is the rms speed of a molecule in Mars' atmosphere? Assume  R = 8.315 J/mol•K.Express your answer to two significant figures and include the appropriate units.

🤓 Based on our data, we think this question is relevant for Professor Li's class at UW-SEATTLE.

FREE Expert Solution

The root mean square (rms) speed predicts the speed of gaseous molecules with a certain kinetic energy at a specific temperature




Where: R is the universal gas constant (8.315 J/mol-K)

           T is the temperature in Kelvin

           M is the molar mass of the gas (in kg/mol)


We are asked to determine the urms of carbon dioxide in Mars where the temperature is -63°C.


View Complete Written Solution
Problem Details

Mars has an atmosphere composed almost entirely of carbon dioxide, with an average temperature of -63°C.

What is the rms speed of a molecule in Mars' atmosphere? Assume  R = 8.315 J/mol•K.

Express your answer to two significant figures and include the appropriate units.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Root Mean Square Speed concept. You can view video lessons to learn Root Mean Square Speed. Or if you need more Root Mean Square Speed practice, you can also practice Root Mean Square Speed practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Li's class at UW-SEATTLE.