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ptc-38280391-Visitor
1-Visitor
June 24, 2012
Question

Molecular Weight Function

  • June 24, 2012
  • 3 replies
  • 16531 views

I am looking for a function in MathCAD Prime that will give me the atomic or molecular weights of elements or molecules. There is a function in Excel called mw() where you add the name of an atom or molecule in quotes and it gives you the weight per mole. For example =mw("Li2CO3") produces 73.89138.

 

As a chemical engineer this would be a very useful function in MathCAD and frankly I'm surprized it isn't in the base functionality.

 

Can anyone suggest how one might try to implement this functionality?

 

Thank you in advance!

 

Mike McNamara, P.E.

Simbol Materials

3 replies

V
24-Ruby IV
ValeryOchkov24-Ruby IV
24-Ruby IV
June 25, 2012

In Mathcad 15:

pt.png

S
StuartBruff23-Emerald V
23-Emerald V
June 25, 2012

Do you mean something like the attached? (Needs work to handle molecular formulae with parentheses).

Stuart

V
ViktorKorobov1-Visitor
1-Visitor
June 25, 2012

Stuart,
If you modify this file, it will be fine chemical Mathcad-calculator!
Valery,
This is a very good idea for a Mathcad Calculation Server.

mw.GIF

V
24-Ruby IV
ValeryOchkov24-Ruby IV
24-Ruby IV
June 25, 2012

Viktor Korobov wrote:


Valery,
This is a very good idea for a Mathcad Calculation Server.

Yes, I will add this site:

http://twt.mpei.ac.ru/MAS/Worksheets/Chem/solutions.html

V
24-Ruby IV
ValeryOchkov24-Ruby IV
24-Ruby IV
June 29, 2012

Now on the MCS too - http://twt.mpei.ac.ru/MCS/Worksheets/Chem/MW.xmcd

See

MW1.png

PS

My name is OCHKOV.

Spelling: oxygen, carbon, hydrogen, potassium, oxygen and vanadium.

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