help me

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    • #14277
      bototkaka2
      Participant

      composition of gases like

    • #102799
      ravi2319
      Participant

      carbon dioxide,oxygen,helium,other inert gas traces

    • #102815
      JackBean
      Participant

      what? What are you answering for? 🙄

    • #104609
      manish94
      Participant

      complete the question??

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