https://community.wolfram.com RSS Feed for Wolfram Community showing questions tagged with Chemistry with no replies sorted by active. https://community.wolfram.com/groups/-/m/t/3739570 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/db20a7a0-d564-4c65-b5db-aad92a56bf25 Housam Binous 2026-06-25T20:49:37Z https://community.wolfram.com/groups/-/m/t/3595346 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/91f937b7-01ac-4791-827a-9468625c9ca5 Housam Binous 2025-12-22T17:59:47Z https://community.wolfram.com/groups/-/m/t/3550739 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/dfba162b-19a8-43a5-96b9-06f2bc0091e0 Housam Binous 2025-09-24T15:28:25Z https://community.wolfram.com/groups/-/m/t/3537445 The question is: ![enter image description here][1] vertices = {{0, 0, Sqrt[2/3] - 1/(2 Sqrt[6])}, {0, Sqrt[3]/3, -1/(2 Sqrt[6])}, {-1/2, -Sqrt[3]/ 6, -1/(2 Sqrt[6])}, {1/2, -Sqrt[3]/6, -1/(2 Sqrt[6])} }; scale = (6 Sqrt[2])/Sqrt[Total[(vertices[[1]] - vertices[[2]])^2]]; scaledVertices = scale*vertices; center = Mean[scaledVertices]; a = 6 Sqrt[2]; h = a Sqrt[2/3]; R = 3/4 h; r_inner = h/4; maxBlackRadius = R - 1; hydrogenBalls = Table[Sphere[scaledVertices[[i]], 1], {i, 4}]; carbonBall = Sphere[center, maxBlackRadius]; sticks = Table[Cylinder[{center, scaledVertices[[i]]}, 0.1], {i, 4}]; modelPlot = Graphics3D[{{White, Opacity[0.8], hydrogenBalls}, {Black, Opacity[0.8], carbonBall}, {Gray, Opacity[0.6], sticks}, {Red, PointSize[0.02], Point[center]}, {Blue, PointSize[0.02], Point[scaledVertices]}}, Boxed -> True, Lighting -> "Neutral", ViewPoint -> {1, 1, 1}, ImageSize -> 500, PlotLabel -> "Model"] ![enter image description here][2] My question is: According to the requirements of the problem, what are some good methods to draw the three-dimensional structure of methane, and to draw a circumscribed regular tetrahedron that can accommodate this structure while meeting the requirements, and to determine the correctness of the four options. [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=2025-08-29_195609.png&userId=3529132 [2]: https://community.wolfram.com//c/portal/getImageAttachment?filename=.png&userId=3529132 Wen Dao 2025-08-29T12:12:40Z https://community.wolfram.com/groups/-/m/t/3345812 I cannot find any package, tool, examples, or library in System Modeler related to electrochemistry or electrochemical processes, like electrochemical cell simulation, anodes, cathodes, electrochemical corrosion, or anything related to these topics. Can someone guide me on how to use the system modeler to simulate the corrosion process and cathodic protection? Regards, Rogelio Rogelio de las Casas 2024-12-27T16:03:01Z https://community.wolfram.com/groups/-/m/t/2397051 Does the Wolfram Model describe and confirm Ilya Prigogine`s theory on irreversibility and dissipative structures by which there is a cyclic mechanism (biorhythm) from unstable to stable connections? If the answer is yes, which I believe it is, then where can this process be found in the model? Constantin Cozma 2021-10-31T11:16:55Z https://community.wolfram.com/groups/-/m/t/2218525 Any advice on adding color information (texture) to a 3D print file for a water molecule? The program below can make a gray OBJ file, but is missing the rules in the Export command to add vertex color information. &[Wolfram Notebook][1] [Original]: https://www.wolframcloud.com/obj/f27f9c38-3b7f-433a-a9ae-5e1a188e66d1 [1]: https://www.wolframcloud.com/obj/a2ee76b9-341a-4b7b-a614-d67e35e1a861 Les Butler 2021-03-14T02:08:39Z https://community.wolfram.com/groups/-/m/t/1170701 Hello! Is it possible to get a breakdown of elements composing a defined body, from Wolfram Alpha? E.g. the estimated proportion of one (or all) element present on Earth (including its atmosphere), or on an animal or a plant? Tom Reat 2017-08-26T01:29:35Z https://community.wolfram.com/groups/-/m/t/1154651 Hello, I am trying to connect the "Water and Steam Thermodynamic and Transport Properties " archive, which is written in C, with my Mathematica Code. This archive can be found in the Wolfram Library Archive. There are two files available for download but none of them includes some instructions how to work with them so I tried it by myself. Until now i was not able to make it runnable. I created several errors with the result that i had to rewrite the C-Code in several lines and files. Since I do not belive that it should be necessary to rewrite the entire C-Code i wanted to ask you if someone has alredy worked with this archive ore if anybody has some clues for me, how i should proceed? Thanks in advance for your help. Moritz Pallua 2017-07-28T09:09:29Z https://community.wolfram.com/groups/-/m/t/1131757 I'm trying to set up a demo that uses heat of fusion as a parameter, and haven't found it available as a property under symbol ChemicalData. The "Properties" list offers VaporizationHeat, but not heat of fusion. ElementData does offer FusionHeat, but only for elements, and I need to handle water. Is there some function that gives it? TIA... Ralph Jones 2017-06-30T16:32:05Z https://community.wolfram.com/groups/-/m/t/341309 I was wondering if there was a way to localize a T-s Plot for something like isopentane, I just need to look at a smaller portion of the chart because it gives me values to the moon. Also if there is a way to look a more than one pressure curve at a time that too would be helpful. -CS Christopher Sullivan 2014-09-11T18:55:24Z https://community.wolfram.com/groups/-/m/t/306710 Using Wolfram Alpha as a way to find stoichiometric ratios, I put in "10g of FeTe" and get back exactly what I want: Fe (iron) | 3.044 g (30.4%) Te (tellurium) | 6.956 g (69.6%). Now I am interested in the compound Fe(1.05)Te. What input syntax is necessary for Wolfram Alpha to recognize this as a chemical formula like the example above? David Tam 2014-07-28T19:00:28Z https://community.wolfram.com/groups/-/m/t/305008 Anyone out there interested in interactive tutorials on Chromatography, specifically Ion Chromatography? Hamish Small 2014-07-24T17:12:55Z