Recent content by dpsguy

J is defined in terms of m3 and Pa. So convert L -> m3 and atm -> Pascals to get the new value of R.

Instead of: Try: Note the ; after F.

I think a mention of Mimivirus would be relevant here. From the Wikipedia page on mimivirus: See also the Nature Education article on this topic.

Sorry for disturbing your plans. You are vastly more experienced in these things than I am :)

Do you mean like PCR?

Whenever you are in doubt about units, stick to the SI system. The SI unit of pressure is Pascal (1 atm ~ 10^5 Pa). So if you are using R = 8.314 J/K, use the pressure in Pa, temp in K and Hvap in J. b is the intercept that the line makes with the y-axis (lnP). It is dimensionless. Hvap/RT...

Find γ from the above. Then use: Cp-Cv = R (gas constant) (Cp/Cv) = γ Eliminate Cp from these two equations to get Cv.

Thanks! I guess I'll read up a bit more on this topic and then trouble you again if I come up against something! PS: Term paper means exam!

Hint: If one mole of arachidonic acid produces 43.5 kJ energy, how many moles are required to produce 41800 kJ? Once you have this number, multiply it by the molecular weight of arachidonic acid to get the mass needed. I have not checked your calculations. I am assuming they are correct.

The equation is: ln(K1/K2)=Ea/R[(1/T1)-(1/T2)]

Thanks, I'll have a look at this paper as well. The problem is, I was given these questions on my term paper where I did not have access to all this literature you are citing. So could you tell me how do I even begin to solve such questions if I encounter them in the future? For example, peaks...

I guess then the 107 and 109 peaks would be due to CH3CHBr+ (with both isotopes of bromine of course). I think you are right about how the allyl radical is formed. Thanks for the great research! I'll go through the paper you mentioned. I am sure I would never have been able to figure this out...

I finally found the questions here: (http://www2.chemistry.msu.edu/faculty/reusch/virttxtjml/questions/Spectroscopy/masspec2.htm). The answer given for the first question is ethyl iodide while for the second one is 1-bromopropane or 2-bromopropane. However there is no explanation provided. The...

It is not necessary for the compound to be a hydrocarbon. Its just that I had not thought of bromine. In that case, the first compound could also be ethyl iodide, since the MW of iodine is 127. Do you think I am on the right track? And what would could be the structure of the second compound...

1. A liquid compound gave a mass spectrum showing a strong molecular ion at m/z = 156. The only fragment ions are seen at m/z = 127 and 29. Suggest a structure of this compound. 2. A liquid compound gave a mass spectrum in which the molecular ion appears as a pair of equal intensity peaks at...