A gas of helium atoms (each of mass 6.65 × 10^-²⁷ kg)are at room temperature of 20.0°C.What is the de Broglie wavelength of the helium atoms that are moving at the root-mean-square speed? (h = 6.626 × 10^-34 J ∙ s,the Boltzmann constant is 1.38 × 10^-23 J/K) A)5.22 × 10^-11 m B)7.38 × 10^-11 m C)1.04 × 10^-10 m D)2.82 × 10^-10 m E)3.99 × 10^-10 m

Question

Quizplus · Accepted Answer

The Answer of A gas of helium atoms (each of mass 6.65 × 10^-²⁷ kg)are at room temperature of 20.0°C.What is the de Broglie wavelength of the helium atoms that are moving at the root-mean-square speed? (h = 6.626 × 10^-34 J ∙ s,the Boltzmann constant is 1.38 × 10^-23 J/K) A)5.22 × 10^-11 m B)7.38 × 10^-11 m C)1.04 × 10^-10 m D)2.82 × 10^-10 m E)3.99 × 10^-10 m

A Gas of Helium Atoms (Each of Mass 6