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Version 3.1 of Molecular Weight Calculator for Windows now available.

      New Features:  New Windows Interface
                     Modify elemental values (element weight and uncertainty)
                     Edit and save abbreviations and elemental values while
                          program is running
                     Save options as defaults
                     Copy and paste information to/from other Windows programs
                     Unlimited formula length
                     Ability to print results
                     Ability to change the font used to display formulas
                     Mole/Mass Converter
                     Formula Finder
                     Full hypertext help

    Why is it better than other programs available?  First of all it's
free, yet fully functional.  I feel it is very powerful, more functional
and more user friendly than other molecular weight programs I've
found over the net.  I like it so much that I'm making it available
for others so that they can use it in their research and studies.  Plus, the
program is fully Windows 95 compatible (beside Win 3.x).  The Dos version
is also still available.

    Windows Version (MWT Win v3.1)

The program is available via the web at or at and under the file

The program is also available via Anonymous FTP at under the
SimTel/win3/chem directory in the file, at under
pub/simtelnet/win3/chem in the file, and (around
August 1, 1996) under the pub/chemistry/software/MS-WINDOWS/ directory in 
the mwt3_1.exe file.

   Dos Version (MWT v2.8)

The program is available via the web at or at and

The program is also available via Anonymous FTP at under the
SimTel/msdos/chemstry directory in the file, at under
pub/simtelnet/msdos/chemstry in the file, and under the
pub/chemistry/software/MS-DOS/Molecular-Weight-Calculator directory in the
mwt2_8.exe file.

    As a final option, I can mail you a UUEncoded or MIME encoded version 
via e-mail; just drop me a line.

Please see my home page for the Dos version features.

As for the windows version, ...

Multi Line Display	Display of up to seven formulas with their molecular
weights simultaneously.

Percent Composition	Percent composition of up to seven formulas.

Parentheses Are Allowed	Handles up to 4 layers of embedded parentheses.

For example, (CH3)3CH2CH3 is equivalent to CH3CH3CH3CH2CH3.

Hydrates or other appended compounds are allowed.

For example, FeCl3-6H2O.

User-definable abbreviations	Default abbreviations are included for common
parts of compounds, including amino acids.  See full list.

For example, PhCl = C6H5Cl and HOac = CH3COOH.

Smart Case Conversion	The program will automatically convert lowercase
letters to uppercase where appropriate for ease of entering a formula.  Exact
case matching and non-conversion are also available.

Edit and save abbreviations while program is running.

Isotopes are recognized using the following notation:

^13C is Carbon-13
	C6H5^18OH is heavy-oxygen (Oxygen-18) labeled phenol

Feature of weighting parts of a compound relative to the other parts.

For example,

[.2Na]Cl would have a weight of 0.2*22.989768+35.4527=40.0507
NaCl-[.5H2O] would have a weight of

Percent Solver mode for finding the value of "x" in a compound that satisfies
user-specified percent composition requirements.

Edit and save elemental values while program is running.

Accuracy of the final digit of the molecular wt. and percent composition.

Capability to set optional features at the command line when starting the

Capability of saving options as defaults and automatic loading of the saved
options upon program start.

Easily Cut, Copy, and Paste information between the Molecular Weight Calculator
and other Windows applications.

Mole/Mass Converter for easily translating moles to mass (kg, g, mg, pounds,
ounces) and back.

Formula Finder for finding possible compound empirical formulas for a given
molecular weight or for a given set of percent composition data.

Capability of printing results.

Extensive On-Line Help and Error Checking

Contacting the Author

You can contact me by E-mail at Monroem@UWyo.Edu until I graduate in May 1997. 
After that, E-mail BPat@UWyo.Edu for information on my whereabouts.

About the Author

I am an undergraduate chemistry major at the University of Wyoming in Laramie,
Wyoming.  I plan to attend graduate school and aim to obtain a doctorate in
chemistry.  I taught myself to program in BASIC on an Apple //c (with 128 Kb of
Ram and no hard disk) in 1986 during 6th grade.  Since then, I have updated to
GW-Basic, then QuickBasic v4.5, QuickBasic v7.1 for DOS, and now Visual Basic
3.0 for Windows.  I am familiar with C, and, though I know it is much faster
than Basic, I stick with the various forms of Basic since I am much more
comfortable with the language.  I have also been told that Visual Basic is
easier to learn than Visual C, and, in fact, I taught myself Visual basic in
two days.

I was goin' Chopin', but I forgot my Lizst! Had to go Bach to get it.

                                   What are the following?
Matthew Monroe               Black Angus            :      Black Angus
Chemistry Major              Black Angus            :      Texas Longhorn
University of Wyoming        Black Angus            :      Brown Swiss
                             -------------------------------------------------             Homogeneous Catalyst   :   Heterogeneous Catalyst

| |           This tagline is umop apisdn.
Modified: Fri Jul 12 16:00:00 1996 GMT
Page accessed 5254 times since Sat Apr 17 21:29:59 1999 GMT