Explanation: The root means square velocity of a gas can be calculated as follows: Vrms = [tex] \sqrt{ \frac{3RT}{M}} [/tex] where: R is the ideal gas constant = 8.3145 T is absolute temperature = -55 + 273 = 118 degrees kelvin M is the molar mass of the gas = 131.293 grams = 0.131293 kg
Substituting with these givens in the above equation, we would find that the Vrms is 149.7266 m/sec
