# Calculating a particles most probable speed

by TFM
Tags: particles, probable, solved, speed
 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 $$V_m_p = \sqrt{\frac{2*k_B*t}{m}}$$ 3. The attempt at a solution $$V_m_p = \sqrt{\frac{2*(1.3807*10^-^2^3)*281}{44}}$$ I have also tried with $$V_m_p = \sqrt{\frac{2*(1.3807*10^-^2^3)*281}{0.044}}$$ with m in kg/mol, but to no avail. I am sure this is the right equation, TFM