can somepne help me on

  1. can somepne help me on parallel structure? i really don't get it.can u make this a parallel a structure because i don't know
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    2. tony asked by tony
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  2. A sample consisting of various gases contains 2.6 10-6 mole fraction of radon. This gas at a total pressure of 37 atm is shaken
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    2. kanika asked by kanika
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