Question

what is the molecular speed of helium gas at random temperaure 300k​

Answer 1

Answer:

gas temperature is move constantly there speed is urms

speed

Answer 2

Explanation:

Average kinetic energy of an ideal gas is equal to its thermal energy. Since, for helium, degrees of freedom is 3 as there is only translational motion possible in three directions. Hence,

KE=U=2fkT=23(1.3807X10−23)(300)=6.21X10−21J

Answer is 6.21X10−21J