Now Halle and Luther try a homework problem. The mass of a helium atom is 6.64 x 10 2 kg, while the mass of an argon atom is 6.63 x 10-26 kg. Find the average speed of helium atoms at 345 K. 0000000001 X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. m/s Find the temperature that argon gas must have for the same average speed of argon atoms. 3,444.8 K