November 28, 2015

Homework Help: science

Posted by Tiffany on Wednesday, August 25, 2010 at 3:54pm.

A mixture of two gases, C2H2 and H2, has the properties listed below.


What is the PT for this mixture?

I first found out the mole fraction by first adding H2 and C2H2 and got 0.043, then did 0.028/0.043. I rounded it to 0.651. I then set up my equation like this:

79 = (0.651)*Pt

i divided 79 by 0.651 (so the equation was like this: 76/0.651) and got 121 (rounded to nearest whole number). However, the answer was 120. What did I do wrong?

PS: My teacher never taught me this.

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