Posted by Miley on Sunday, May 4, 2008 at 12:39pm.
You need to tell me what numbers you are using. The second q of 13054 looks ok but I used 78.4 for the boiling point and 78.4-25 = 53.4). Perhaps you used a different boiling point.
I found several values for heat of vaporization. You should have mass x heat vaporization, then add the two qs together. I don't know what the 43.5 is in the first q but probably that part is wrong. Perhaps I can be more helpful if you tell me what values you are using.
43.5 i got off a phyical state changing chart...
If its 45.3 J/g*C for the heat of vaporization, then q = 100 x 45.3 = ??
However, I didn't see anything that looked like that when I looked for delta H vap.
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