Oct 12, 2023 · Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations. 39. The inert pair effect describes the preference of late p-block elements (elements of the 3rd to 6th main group, starting from the 4th period but getting really important for elements from the 6th period onward) to form ions whose oxidation state is 2 less than the group valency. So much for the phenomenological part.This web site shows how the molecules line up in the crystals. Yes, some ice is denser than water. If you put pressure on regular ice, and give it time to rearrange, the molecules will move into a new crystal lattice which results in the ice being more dense than water. In the first ice crystal, there are spaces between some of the molecules ...Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations.May 16, 2012 · The AgX+ A g X + ion and the ClX− C l X − ion are close to the same size (with the silver ion being smaller), so they can approach each other quite closely. In silver nitrate, the NOX3X− N O X 3 X − ion is larger and does not allow as close an approach as the chloride ion, so the bond is weaker, easier to break up, and the salt is more ... The overlap is actually in making the boards and the electronics. What materials and what properties something has and why you would use it in a computer. Software and material science are fully decoupled in electronics. Chemist needs to know how what is a field-effect transistor and how to measure conductivity.Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format …Q&A for academics and those enrolled in higher education. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.. Visit Stack ExchangeAs a premium clothing brand, Peter Millar has made a name for itself in the world of luxury fashion. However, with so many competitors on the market, it can be difficult to know whether this brand is worth the investment.Jan 20, 2014 · FeX2+ F e X 2 + ion containing metal surfaces, rust, drinking water, blood etc., but also copper and brass, give rise to a similar odor on contact with the skin. The human ability to detect this odor is probably a result of the evolutionarily developed but largely dormant ability to smell blood (“blood scent”). Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations. Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations.Dec 15, 2015 · Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations. The recipe for the plastics-from-starch uses starch, glycerol, acetic acid (the CX2HX4OX2 C X 2 H X 4 O X 2 in your equation) and water as a solvent. (They do not add lactic acid, the CX3HX8OX3 C X 3 H X 8 O X 3 in your equation, but lactic acid can be produced by hydrolysis of the starch.) With the starch-acetic acid-glycerol recipe, you do ...Newest 'chemistry' Questions - Worldbuilding Stack Exchange. Questions tagged [chemistry] Ask Question. For questions that have to do with chemistry, chemical …It is an ångström, a unit of length commonly used in chemistry to measure things like atomic radii and bond lengths. Although not an official SI unit, it has a simple relationship to the metric units of length: 1ångström = 1Å =10−10 m = 0.1nm = 100pm. 1 å n g s t r ö m = 1 Å = 10 − 10 m = 0.1 n m = 100 p m. The angstrom was intended ...Apr 2, 2019 · Yes , it is a scam . This has been discussed at National Association of Corrosion Engineers meetings for decades. The vendors have actually sold some to refineries; however they can never demonstrate good results in objective tests. The excuses the vendors find for the failures are a tribute to creative thinking. – blacksmith37. Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. It only takes a minute to sign up. Sign …5. Hyperconjugation is the interaction between adjacent orbital (empty p p for cation, π π for alkene) with σ σ bond, while common conjugation is between adjacent orbital and π π bond. As one example, one reason why more alkyl substituted alkenes are more stable than less substituted ones is because more alkyl groups provide more ...Bioinformatics Stack Exchange is a question and answer site for researchers, developers, students, teachers, and end users interested in bioinformatics. It only takes a minute to sign up. Sign up to join this community. Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top ...Amps = volts / resistance. Watts = amps * volts. Joules = watts * seconds. Things that effect resistance, and their effects on product versus waste heat and rate of production: Adjusting each parameter individually: Voltage: Per unit of energy supplied, in general, a lower voltage produces more product and less waste heat from electrolysis.Mar 4, 2017 · Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations. Chemistry Stack Exchange and a California Science Fair Project are used here. We basically see that the reaction for rusting is: 4 F e + 3 O 2 + 6 H 2 O → 4 F e ( O H) 3, with an overabundance of iron and water in a pipe, the limiting factor is oxygen, and how conductive the solution is. While oxygen is the limiting factor, concentration of ...Chemistry Meta Stack Exchange is moderated by you. Review queues contain posts (also known as review tasks) that might need community attention, as determined by the …The chemistry is fairly simple: N a H C O X 3 84 g + H C l 36 g N a C l + H X 2 O + C O X 2 f i z z. You can make a dilute baking soda solution as well and add slowly with stirring. Just keep adding until it no longer fizzles, then test with pH paper. Repeat.Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. ... By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.Jun 7, 2016 · where δV = M(1/dl − 1/ds) δ V = M ( 1 / d l − 1 / d s) where M M is the molecular weight and d d the densities of liquid and solid. T1 T 1 and P1 P 1 are temperature and pressure at the triple point. Thus you have to iterate T1 T 1 and P1 P 1 by fitting (say by least squares) to the calculated curves to whatever data you have to find the ... Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, ... $\begingroup$ As an undergraduate chemist who wanted to learn more about QM, Griffiths was the perfect choice as well. Dirac was difficult to read, would not recommend as introductory textbook. ...Chemistry Stack Exchange uses MathJax to render LaTeX syntax. You can use single dollar signs to delimit inline equations, and double dollars for blocks: The equation $ 3x^2 + 5x +1 = 0 $ has the solutions $$ x_{1,2} = \frac{-5 \pm \sqrt{5^2-12}}{6} $$ Learn more: MathJax help.Here is the list some books which i fill it is good and detailed: IB Chemistry Course Book 2014 edition: Oxford IB Diploma Programme. General Chemistry (Dover Books on Chemistry) Comprehensive Chemistry by Dr. N.K. Verma, Prof. S.K. Khanna and Dr. B. Kapila.Thanks for contributing an answer to Physics Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations.Apr 3, 2017 · There is a lot of work associated to create such a database, or software. Organic Synthesis is one open-access reference for organic reactions, yet the normal output is a html / pdf of the reaction procedure, and not a *.sdf (or other chemically relevant *.xml-like) format. Inorganic Synthesis is a publication with similar intent as the former ... Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations.Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, ... This site is for discussion about Chemistry Stack Exchange. You must have an account there to participate. Help. Visit chat. Linked. 14. Community Promotion Ads - 2017. 11.Effect of Temperature on pH of Water. The Kw K w is a function of temperature. It is 10−14 10 − 14 at 25 ∘C 25 ∘ C. When the temperature is 50 ∘C 50 ∘ C, the Kw K w can be calculated to be somewhere around 10−12 10 − 12 using Vant Hoff's equation, but this is so weird.2 Answers. Carbon Dioxide (CO 2) readily dissolve in water and form Carbonic Acid (i.e H2CO3 (aq) ) This is the formation of bonds. Then Carbonic Acid (i.e H 2 CO 3 (aq) ) dissociate in water as follows. So water gets H + ions, so that cause water acidic. The following shows dissociation of Carbonic Acid (i.e H 2 CO 3 (aq) ) more clearly.F e X 2 + ion containing metal surfaces, rust, drinking water, blood etc., but also copper and brass, give rise to a similar odor on contact with the skin. The human ability to detect this odor is probably a result of the evolutionarily developed but largely dormant ability to smell blood (“blood scent”).Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to ... density-functional-theory vasp molecular-dynamics quantum-espresso computational-chemistry software quantum-chemistry python band-structure molecular-modeling more tags. Active 1 Bountied Hot …Sep 25, 2017 · NotEvans. 17.1k 3 68 135. Add a comment. 4. Normal phase HPLC means the stationary phase is polar and the mobile phase is non-polar; reversed phase means the stationary phase is non-polar and the mobile phase is polar. See HPLC Separation Modes (from Waters, a manufacturer of chromatography equipment and supplies) for more insight. Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations.Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. It only takes a minute to sign up. Sep 2, 2016 · Dissolving of the ammonium chloride can also be thought as two separate processes, see equation (2 ′). NHX4Cl(s) [NHX4X + (g)] + [ClX − (g)] NHX4X + (aq) + ClX − (aq) Meaning that first we break up the ammonium chloride crystal structure and second we dissolve the bare ions. If we want to write that in single enthalpy terms, we can do ... Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Visit Stack Exchange.Dec 15, 2015 · Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations. I have printed the model in HIPS and the support in PLA. I have put the 3D model in a ultrasonic cleaner in the solution with water and sodium hydroxide. (1 liter H2O + 200 grams NaOH) The PLA has dissolved after 3 hours with temperature 65° and 1 hour of ultrasonic sound. I attach a youtube link with a similar experiment.Chemistry Stack Exchange Q&A for scientists, academics, teachers, and students in the field of chemistry (103,110 total users) Aug 27, 2023 - Aug 31, 2023 « prev week Type to find users: Sort by: user55119 5 52 92 member for: 5 years, 9 months #1 week rank not previously ranked 15,779 total reputation 145 week reputation Poutnik 3 45 97Dec 2, 2022 · The intersection between the wafer surface and the (122) plane is a line parallel to (1,1,1) x (1,2,2) = (0,-1,1). The angle between these two is 120 degrees. Because of the symmetry of the wafer, other solutions are 0 or -120 degrees. (You would get those by dialing in the (212) or the (221) plane.) If you’re in the market for a small SUV, you’ve likely encountered the Honda HR-V in your search. This popular vehicle has gained a reputation for being reliable, efficient, and versatile.Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. It only takes a minute to sign up.19. In chemistry ask "why" only after you ask "if". Given a sufficiently strong superacidic medium, H X 3 O X + can be protonated to H X 4 O X 2 +. Evidence for this reaction, by studying isotopic exchange in a H F + S b …Effect of impurities on melting point. This is a 10th-grade question. The melting point of a substance decreases with increase in presence of impurities in it. The melting point of ice decreases from 0 °C to -22 °C on mixing salt in it in proper proportion. That is why salt is added to make freezing mixtures to keep ice creams frozen.4. There are two ways to think of charge separation and both make resonance structures less stable: Moving electrons from a bond to a single atom to generate a cation/anion pair. For example: RX2C=CH−CH=CRX2 RX2C=CH−C+H−C−RX2 R X 2 C = C H − C H = C R X 2 R X 2 C = C H − C + H − C − R X 2.There are two reactivities of carbon dioxide that might form a problem in certain contexts. The first one is the (weak) acidity of carbonic acid, which could lead to reactions with bases. This is important especially in titrations when a specific concentration of base is desired which should remain stable over time.Need for AINR-based simulations (vs. laboratory experimentation) The Results section of this paper related to ab initio molecular dynamics states that "16 HX2O H X 2 O and 15 HCN H C N molecules were taken together, and the system was allowed to evolve for 750 ... computational-chemistry. ab-initio.Add line anywhere in topol.top and remove SOL from moleculetype section. #include "oplsaa.ff/spce.itp". About protein error- Check if your *.gro file include 1 protein molecule and 53832 water molecule in it. I am suspicious your *.gro file does not have protein molecule and filled with water only.Feb 6, 2015 · Some Fortran use is because of performance. The language was designed to be: especially suited to numeric computation and scientific computing. Many times, I find chemistry coders sticking to Fortran because they know it and have existing highly optimized numeric code-bases. Welcome to Chemistry Stack Exchange! To get you the best answer, we provide this guidance for first-time askers. Before you post, search the site to make sure your question hasn’t been answered. Follow our policies when asking homework-like questions (questions about problem sets, exam items, etc.).Of these, 4 are mathematics books, 3 are chemistry books, 2 are history books, and 1 is a language book. Ms. Jones wants to arr... Stack Exchange Network Stack Exchange network consists of 183 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build …Monoatomic Gold acts upon the pituitary gland, inducing an increase in hormonal production, and is thus a rejuvenation agent. Monoatomic Gold strengthens the heart, improves the production of red blood cells in the bone marrow and increases the production of semen... It can be manufactured alchemically out of 24carat metallic gold...Chemistry Stack Exchange and a California Science Fair Project are used here. We basically see that the reaction for rusting is: 4 F e + 3 O 2 + 6 H 2 O → 4 F e ( O H) 3, with an overabundance of iron and water in a pipe, the limiting factor is oxygen, and how conductive the solution is. While oxygen is the limiting factor, concentration of ...Now, coming to indium oxide, the formula of this compound as stated here is InX2OX3 I n X 2 O X 3, which bears a resemblance to the formula of AlX2OX3 A l X 2 O X 3 and GaX2OX3 G a X 2 O X 3 which we stated above. So, I would expect this oxide to atleast have some amphoteric properties.Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. ... By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.Math Stack Exchange's default style uses a light-colored page background, so avoid using light colors for text. Stick to darker colors like maroon, green, blue, and purple, and remember also that 7–10% of men are color-blind and have difficulty distinguishing red and green. (Some people have difficulty distinguishing other colors too, …Effect of impurities on melting point. This is a 10th-grade question. The melting point of a substance decreases with increase in presence of impurities in it. The melting point of ice decreases from 0 °C to -22 °C on mixing salt in it in proper proportion. That is why salt is added to make freezing mixtures to keep ice creams frozen.Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations.The key difference between ΔG° and ΔG°' is the concentration of protons, or [H+], in the solution. ΔG° is the standard Gibbs free energy change, which is measured under standard conditions, which include a temperature of 298 K, a pressure of 1 atm, and all reactants and products at a concentration of 1 M. ΔG°', on the other hand, is the ...Need for AINR-based simulations (vs. laboratory experimentation) The Results section of this paper related to ab initio molecular dynamics states that "16 HX2O H X 2 O and 15 HCN H C N molecules were taken together, and the system was allowed to evolve for 750 ... computational-chemistry. ab-initio.If E° of a Half Cell is based on the chosen reference Electrode (Generally SHE) then how is the equation ΔG°= -nFE° be valid for a Half Cell. For example let us take the reaction: Zn (s) ---> Zn^2+ (aq) + 2e^- (aq) ;ΔG°, which we are considering as our half cell And now suppose, by taking the value of E° of SHE (Standard Hydrogen ...Usually, values are given for the logarithmic constant pKa, which is defined as. pKa = −log10Ka. or. Ka =10−pKa. The corresponding equilibrium for acetic acid is. CHX3COOH↽−−⇀CHX3COOX− +HX+. The value of the logarithmic constant for acetic acid at 25 °C is. pKa = 4.756. Thus, the value for the acid dissociation constant is.Redox titrations : Oxidation of metallic Iron by Potassium Dichromate. 0.31 g of an alloy of Fe + Cu was dissolved in excess of dilute H X 2 S O X 4 and the solution was made upto 100 ml. 20 ml of this solution required 3 ml of N 10 K X 2 C r X 2 O X 7 solution ... inorganic-chemistry. physical-chemistry. redox.May 16, 2012 · The AgX+ A g X + ion and the ClX− C l X − ion are close to the same size (with the silver ion being smaller), so they can approach each other quite closely. In silver nitrate, the NOX3X− N O X 3 X − ion is larger and does not allow as close an approach as the chloride ion, so the bond is weaker, easier to break up, and the salt is more ... Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations.In a comment on the question I previously asked in Chemistry Stack Exchange, I was told that these other determinants have just different occupied orbitals. But then they are excited states and should already be included in the normal multi-configurational ansatz (CISD for example).The key point in carbohydrate numbering is to look for the carbon which is an aldehyde or a ketone (the carbonyl carbon). This will be the end of the monosaccharide which is numbered lowest. For aldoses, this carbon would be carbon 1. For ketoses, it's the lowest number that can be reached in the linear, ring-open form (e.g. for fructose, it's 2).Software: This can be any software ranging from plugins for the browser over mobile apps up to standalone applications for the computer. Pure 2D or 3D visualization programs as well as quantum chemistry programs might not fit in this category, as they are not primarily focused on teaching chemistry.Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. ... By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.Dec 24, 2014 · Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. It only takes a minute to sign up. Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. It only takes a minute to sign up. Sign up to join this community Aldehydes contain the carbonyl group bonded to at least one hydrogen atom. Ketones contain the carbonyl group bonded to two carbon atoms. Aldehydes and ketones are organic compounds which incorporate a carbonyl functional group, C=O. The carbon atom of this group has two remaining bonds that may be occupied by hydrogen, alkyl or …chemistry.stackexchange.com is ranked #0 in the Science, Dissolving of the ammonium chloride can also be thought as two separate processes, see equation (2, Chemistry Stack Exchange is a question and answer sit, Place 2.5 g 2.5 g 30-mesh powdered sample of arecoline nut in distillation flask. Add 5 mL 5 m, 39. The inert pair effect describes the preference of late p-block elements (el, Thanks for contributing an answer to Chemistry Stack Exchange! Please be, Feb 25, 2014 · 39. The inert pair effect describes the preference of late p-block elements (, May 16, 2012 · The AgX+ A g X + ion and the ClX− C l X, E + S ↔ ES → E + P (with product inhibition) Note that the , It’s important to have a variety of options when you’re, Chemistry Stack Exchange is a question and answer s, Jun 4, 2020 · Thanks for contributing an answer to Chemistry Stack Ex, Oct 27, 2015 · The overlap is actually in making the boards and t, Here is the list some books which i fill it is good and detail, 1. Today I stumbled across a website which defined the titration of, Chemistry Stack Exchange is a question and answer site for sci, Chemistry Stack Exchange is a question and answer site for scient, Stack Exchange network consists of 181 Q&A communitie.