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James Silverton[_2_] James Silverton[_2_] is offline
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Default Molecular weight

Roger wrote on Mon, 15 Oct 2007 06:15:02 -0700:

R "Mike H" wrote:

?? Roger,
??
?? I'm not aware of any inbuilt function but setting up
?? manual calculation is simple enough.
??
?? For water we need the molecular weights of the elements
?? and there are plenty of tables on the net for this
?? including this one:-
??
?? http://hamers.chem.wisc.edu/chapman/Other/chem.html
??
?? Water is 2 part H and 1 part O so enter the molecular
?? weight for each in a cell and add them up:
??
?? 2*H = 2*
?? 1*O = 15.9994
??
?? so A1=1.00794
?? A2= 1.00794
?? A3= 15.995
?? A4=sum(a1:a3) =18.01528
?? So 1 mol of water equals 18.01528 gms
??
?? Mike
??
?? "Roger" wrote:
??
?? Hello,
??
?? In excel how do i work out how much 1 mol of water
?? weighs?
??

I think there is typo here and what is wanted is a mole, ie
gram molecular weight or molecular weight in grams.


James Silverton
Potomac, Maryland

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