At 298 K and 1 atm pressure, a gas mixture contains equal masses of He, H2, O2 and NH3 . Which of the following is
correct for their average molecular velocities?1. He> H2 >NH3> O2 2 He<H2<O2< NH3 3. H2< He<NH3<O2 4. O2<NH3 <He<H2
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Answer:
Molecular velocities ∝ 1/mass of glasses
∴ Order of their molecular velocities will be
O2<NH3<HE<H2
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