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Mass of inerts in a mixture?

  • Thread starter juice34
  • Start date
  • #1
juice34

Homework Statement


What is the mass fraction of CO, CO2, H2, CH4, and Inerts in 3000metric tonnes of gas mixture, with mole percentages of:
-3.52mol% CO2
-27.86mol% CO
-67.99mol% H2
-0.21mol% CH4
-0.44mol% inerts

Homework Equations


basic conversions, although we dont know the molar mass of the inerts.
 

Answers and Replies

  • #2
51
0
Hello!

You have to convert these from mole fraction to mass fraction, right?

The conversion is wi=XiMi / ΣXiMi

X = mole frac., w = mass frac., M = molar mass.

Leave M for the inerts unknown. You need another equation to solve for the inert's molar mass or cancel it out.

Hint: the sum of the weight fractions must equal 1.
 

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