At what temperature will be total kinetic energy $\left( {KE} \right)$ of $0.30$ mole of He be the same as the total $KE$ of $0.40$ mole of ${\rm{Ar}}$ at $400{\rm{K}}?$

NEET UG CHEMISTRY MCQ: STATES OF MATTER

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At what temperature will be total kinetic energy

\left( {KE} \right)

0.30

mole of He be the same as the total

KE

0.40

mole of

\mathrm{Ar}

400\mathrm{K}?

View answer and explanation

Correct option: C

533\,\,\mathrm{K}

Option C (

533\,\,\mathrm{K}

) is correct because the kinetic energy of a gas is directly proportional to the number of moles and temperature, allowing us to equate the kinetic energies of He and Ar.

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