Properties (Molecular Weight): Difference between revisions
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Scott Munro (talk | contribs) m (1 revision imported) |
imported>Scott.Munro m (Text replacement - "\mathit{MW}" to "{\rm MW}") |
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\mathit{mdProps\_MW} = | \mathit{mdProps\_MW} = | ||
\begin{bmatrix} | \begin{bmatrix} | ||
\ | {\rm MW}\text{ (g/mol)}\\ | ||
{s_{\rm e}}^*\\ | {s_{\rm e}}^*\\ | ||
\end{bmatrix}</math> | \end{bmatrix}</math> | ||
| Line 250: | Line 250: | ||
* <math>s_{\rm m}</math> is a string of characters representing the molecular formula of the substance | * <math>s_{\rm m}</math> is a string of characters representing the molecular formula of the substance | ||
* <math>\mathit{returnElementCount}</math> indicates whether to return a stoichiometric count of each element identified in the molecular formula (default is to omit) | * <math>\mathit{returnElementCount}</math> indicates whether to return a stoichiometric count of each element identified in the molecular formula (default is to omit) | ||
* <math>\ | * <math>{\rm MW}</math> is the molecular weight of the substance (g/mol) | ||
* <math>s_{\rm e}</math> is a string of characters representing the stoichiometric count of each element identified in the molecular formula | * <math>s_{\rm e}</math> is a string of characters representing the stoichiometric count of each element identified in the molecular formula | ||
* the <math>^*</math> superscript denotes an optionally-returned result | * the <math>^*</math> superscript denotes an optionally-returned result | ||
Revision as of 12:05, 29 July 2023
Description
This article describes a method for providing the molecular weight of chemical compounds.
Model theory
 This section is currently under construction. Please check back later for updates and revisions.
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Table 1. Atomic weight. Element Atomic weight (g/mol) Ac 227 Ag 107.8682 Al 26.9815384 Am 243 Ar 39.948 As 74.921595 At 210 Au 196.96657 B 10.811 Ba 137.327 Be 9.0121831 Bi 208.9804 Bk 247 Br 79.904 C 12.0107 Ca 40.078 Cd 112.414 Ce 140.116 Cf 251 Cl 35.453 Cm 247 Co 58.933194 Cr 51.9961 Cs 132.90545196 Cu 63.546 Dy 162.5 Er 167.259 Es 252 Eu 151.964 F 18.998403163 Fe 55.845 Fm 257 Fr 223 Ga 69.723 Gd 157.25 Ge 72.63 H 1.00794 He 4.002602 Hf 178.486 Hg 200.592 Ho 164.930328 I 126.90447 In 114.818 Ir 192.217 K 39.0983 Kr 83.798 La 138.90547 Li 6.941 Lr 262 Lu 174.9668 Md 258 Mg 24.305 Mn 54.938043 Mo 95.95 N 14.0067 Na 22.98976928 Nb 92.90637 Nd 144.242 Ne 20.1797 Ni 58.6934 No 259 Np 237 O 15.9994 Os 190.23 P 30.973761998 Pa 231.03588 Pb 207.2 Pd 106.42 Pm 145 Po 209 Pr 140.90766 Pt 195.084 Pu 244 Ra 226 Rb 85.4678 Re 186.207 Rh 102.90549 Rn 222 Ru 101.07 S 32.065 Sb 121.76 Sc 44.955908 Se 78.971 Si 28.0855 Sm 150.36 Sn 118.71 Sr 87.62 Ta 180.94788 Tb 158.925354 Tc 98 Te 127.6 Th 232.0377 Ti 47.867 Tl 204.3833 Tm 168.934218 U 238.02891 V 50.9415 W 183.84 Xe 131.293 Y 88.90584 Yb 173.045 Zn 65.38 Zr 91.224
Excel
The molecular weight calculation may be invoked from the Excel formula bar with the following function call:
=mdProps_MW(Formula as String, Optional returnElementCount as Boolean = false)
Invoking the function with no arguments will print Help text associated with the model, including a link to this page.
The input parameters and calculation results are defined below in matrix notation, along with an example image showing the selection of the same cells and arrays in the Excel interface:
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![{\displaystyle {\begin{aligned}{\mathit {Formula}}&={\big [}s_{\rm {m}}{\big ]}\\{\mathit {returnElementCount}}&={\big [}{\text{(True/False)}}{\big ]}\\\end{aligned}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/aa53805974ea7bc297368d39c27cb28512ede4ff)
