Which molecule moves with the fastest average speed while being bound in Earth's atmosphere in thermal equilibrium? A) water, H₂O (atomic mass = 18) B) carbon dioxide, CO₂ (atomic mass =44) C) nitrogen (atomic mass= 28) D) oxygen (atomic mass = 32) E) hydrogen, H₂ (atomic mass = 2)

Question

Quizplus · Accepted Answer

Hydrogen (H₂) has the smallest atomic mass among the given options, and according to the kinetic theory of gases, at a given temperature, lighter molecules move faster on average than heavier ones.

Which Molecule Moves with the Fastest Average Speed While Being