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MMLU-Pro / 4241 / Air is approximately 80% nitrogen and 20% oxygen (on a mole basis). If 4.0 g of…

Problem

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question

Air is approximately 80% nitrogen and 20% oxygen (on a mole basis). If 4.0 g of hydrogen is added to a 22.4-liter flask maintained at 0°C and initially filled with air at 1atm pressure, what will be the molecular weight (i.e., the average molecular weight) of the hydrogen-air mixture?

category

chemistry

options

  1. 36.0 gm/mole
  2. 4.0 gm/mole
  3. 32.8 gm/mole
  4. 28.8 gm/mole
  5. 22.4 gm/mole
  6. 26.6 gm/mole
  7. 14.4 gm/mole
  8. 18.0 gm/mole
  9. 2.0 gm/mole
  10. 10.9 gm/mole

src

stemez-PhysicalChemistry

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