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A gaseous mixture enclosed in a vessel of volume V consists of one gram mole if a gas 'A' with gamma equals open parentheses fraction numerator C p over denominator C v end fraction close parentheses equals fraction numerator 5 over denominator 3 end fraction and another gas 'B' with gamma equals fraction numerator 7 over denominator 5 end fraction at a certain temperature T. The gram molecular weights of gases A and B are 4 and 32 respectively. The gases do not react with each other and are assumed to be ideal. The gaseous mixture follows the relation P V to the power of 19 divided by 13 end exponent equals constant in an adiabatic process [519/13=10.5] Find the number of moles of gas B in the gaseous mixture

  1. 4 moles    
  2. 3 moles    
  3. 2 moles    
  4. one mole    

The correct answer is: 2 moles

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