![]() ![]() Version 6.12 contains updates to the Lang_Russian.ini file and some minor bug fixes. Version 6.13 adds the ability to customize the 1 letter amino acid abbreviations. Version 6.16 adds the ability to submit a text file from the command line containing a list of compounds to compute the molecular weight of, or containing settings for running the Formula Finder routine in an automated fashion, writing the results to an output file. Version 6.18 adds the ability to compute Isotopic Abundance distributions for any empirical formula, then plot the distributions for visualization ( Screen Shot) Version 6.19 adds the option to automatically display a desired module when the program is started. Version 6.21 contains a new language: Catalan (aka Català), contributed by Antoni Escalas of Barcelona (Catalonia), Spain. ![]() Version 6.22 contains a minor update to the plot window It includes a greatly improved Peptide Fragmentation module (including the ability to have modified amino acid residues, for example phosphorylated residues), a highly configurable professional graphing component, improved abbreviation handling (including allowing abbreviations to reference other abbreviations), additional units in the Mole/Mass and Capillary converters, greatly expanded batch calculation options, the ability to subtract elements out of a formula (use the > symbol), and an updated Isotopic Distribution Modelling module which also now uses the new graphing component. Version 6.26 has undergone major code updates, including moving all of the primary computation routines to a Dll. Version 6.27 contains a minor bug fix in the Peptide Sequence Fragmentation Modelling module concerning the M+H to n+ conversion algorithm Version 6.28 adds the option to define a custom tick starting value and tick spacing for the X or Y axes on the graph component Version 6.29 fixes a bug that caused versions 6.26 through 6.28 to crash on computers where the decimal point was defined as a comma rather than a period (common outside the US and the UK) Version 6.30 includes an improvement of the graph that allows for editing of the frame color and frame style Version 6.31 includes a new window that allows one to compute the solvent viscosity for a water/acetontrile (MeCN) mixture using the Chen-Horvath equation Version 6.32 fixes a bug on the capillary flow calculator that occurred when entering 0 for the particle diameter and finding back pressure It also adds the ability to plot charge states > 1 on the Isotopic Distribution Modelling module Version 6.34 fixes a bug where I used hydrogen as the charge carrier mass rather than a proton. Version 6.35 fixes a minor refresh bug on the mole/mass/dilution calculator form Version 6.37 extends the functionality of the batch calculation engine to support Isotopic Distribution calculations Version 6.38 updates the mass of the most abundant isotope for each element used in the Isotopic Distribution calculator to match the monoisotopic masses of the elements International language files are included in version 6.x for English, Spanish, German, Portuguese, Russian, and Turkish.Īn open source VB.NET DLL version of the calculation routines used in the Molecular Weight Calculator is available at: The ratio of the coefficients is 4:2:4, which reduces to 2:1:2.The latest version of the Molecular Weight Calculator for Windows is Version 6.49: For example, this equation is also balanced if we write it as However, the equation is balanced as long as the coefficients are in a 2:1:2 ratio. The convention for writing balanced chemical equations is to use the lowest whole-number ratio for the coefficients. ![]() Here, we will extend the meaning of the coefficients in a chemical equation. The coefficients in front of the chemical formulas represent the numbers of molecules or formula units (depending on the type of substance). Previously, you learned to balance chemical equations by comparing the numbers of each type of atom in the reactants and products. Molar Relationships in Chemical Equations We get exactly the same answer when combining all the math steps together as we do when we calculate one step at a time.
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