At the same temperature, the rms speeds of hydrogen, oxygen and carbon dioxide molecules are v(H₂), v(O₂) and v(CO₂), respectively. Then:
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Question

At the same temperature, the rms speeds of hydrogen, oxygen and carbon dioxide molecules are v(H₂), v(O₂) and v(CO₂), respectively. Then:

G1 Physics · Accepted Answer

At the same temperature, vᵣₘₛ=√(3RT/M), so rms speed is inversely proportional to √M. Therefore v(H₂)>v(O₂)>v(CO₂). Option A.