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Calculating a particles most probable speed 
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#1
Apr2408, 01:23 PM

P: 1,031

1. The problem statement, all variables and given/known data
Diatomic carbon dioxide gas (CO2) has molar mass of 44.0 g/mol is at a temperature of 281 Kelvin. Calculate the most probable speed . 2. Relevant equations [tex] V_m_p = \sqrt{\frac{2*k_B*t}{m}} [/tex] 3. The attempt at a solution [tex] V_m_p = \sqrt{\frac{2*(1.3807*10^^2^3)*281}{44}} [/tex] I have also tried with [tex] V_m_p = \sqrt{\frac{2*(1.3807*10^^2^3)*281}{0.044}} [/tex] with m in kg/mol, but to no avail. I am sure this is the right equation, TFM 


#2
Apr2408, 01:29 PM

P: 550

The m stands for mass, not mass per mol!
Convert the 44g/mol to kg first. 


#3
Apr2408, 01:35 PM

P: 1,031

It doesn't specify the number of moles, so is it the mass of an individual particle?
TFM 


#4
Apr2408, 02:16 PM

P: 1,031

Calculating a particles most probable speed
I've just checked and it is.
thanks Nick89 


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