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Q: chemistry / petroleum ( Answered,   0 Comments )
Subject: chemistry / petroleum
Category: Science > Chemistry
Asked by: jimg1111-ga
List Price: $2.00
Posted: 11 Sep 2003 18:04 PDT
Expires: 11 Oct 2003 18:04 PDT
Question ID: 254839
"what is the molar mass of crude oil"
Subject: Re: chemistry / petroleum
Answered By: till-ga on 12 Sep 2003 02:13 PDT
The molar mass (or molecular weight) is defined as:

"The sum of the atomic weight's of all the atoms constituting a
molecule; the mass of a molecule relative to the mass of a standard
atom, now 12C (taken as 12.000). Relative molecular mass (Mr) is the
mass relative to the dalton and has no units."
( )

Crude Oil consists of a mixture of a lot of different chemical
substances, maily hydrocarbons. A molecular mass can -as defined
above- only be given for materials that consist of one sort of


Search strategy:
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personal knowledge as a chemist

Request for Answer Clarification by jimg1111-ga on 12 Sep 2003 06:01 PDT
Thanks Bill, I understand.  However, as you so rightly know, it is
difficult to determine the *exact* chemical makeup of crude.  Is there
something like a *standard* formular?  I have been using C30H64, buy
have also found C85H12.  THis is all leading to my *real* question,
which I guess I should have really posted, which is:  How many CuFt of
CO2 are produced when you burn 1 barrel of crude oil?

Clear as sludge?


Clarification of Answer by till-ga on 12 Sep 2003 06:29 PDT
Nobody will be able to give you an exact formula of crude oil as the
composition of a natural ressource will always be different and depend
on many factors, e.g. the provenance.

Please ask "How many CuFt of
CO2 are produced when you burn 1 barrel of crude oil?" as a seperate
as this has not got anything to do with the original question. I hope
you aggree.

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