1. The problem statement, all variables and given/known data What is the Vrms, in meters per second, for helium atoms at 4.8 K? (which is close to the point of liquefaction) 2. Relevant equations Vrms= √(3RT)/(M) 3. The attempt at a solution R=3.145 T= I think its 4.15 Kelvin? based on the point of liquefaction of helium being -269°C -unsure about the temperature M= I think its 0.004003 Kg based on the molar mass of helium Vrms= Sqrt (3*3.1845*4.15)/(0.004003) Any help would be greatly appreciated, Ive tried this a million ways and can't seem to figure it out, Thank You!!