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AP EAMCET2008ChemistryStates of Matter

What is the temperature at which the kinetic energy of 0.3 moles of helium is equal to the kinetic energy of 0.4 moles of argon at 400 ~K ?

Options

  1. A400 ~K
  2. B873 ~K
  3. C533 ~K
  4. D300 ~K

Correct answer

C. 533 ~K

Step-by-step solution

Number of moles of helium =0.3 Number of moles of argon =0.4 We know that KE =n R T KE of helium =0.3 R T KE of argon =0.4 R 400 According to question KE of helium = KE of argon aligned 0.3 R T & =0.4 R 400 T & =533 ~K aligned

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