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NEET2006PhysicsThermodynamicsActual

Two balloons are filled, on with pure He gas and other by air, respectively. If the pressure and temperature of these balloons are same then the number of molecules per unit volume is

Options

  1. Amore in the He filled balloon
  2. Bsame in both balloons
  3. Cmore in air filled balloon
  4. Din the ratio of 1: 4 .

Correct answer

B. same in both balloons

Step-by-step solution

Assuming the balloons have the same volume, as P V=n R T , if P, V and T are the same, n , the number of moles present will be the same, whether it is He or air i.e. nitrogen will be the same.

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