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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 ExchangeThanks 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.Jul 2, 2017 · Q&A for scientists, academics, teachers, and students in the field of chemistry 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 their careers. 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 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 communityAug 22, 2015 · 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. Niobium is a chemical element with atomic number 41 and is represented with the symbol Nb in the Periodic Table. It is a soft, ductile transition metal which is resistant to corrosion due to the presence of an oxide layer on its surface. It is one of the most common elements found in the Earth’s Crust. It is often found in the pyrochlore mineral.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.A quick way to draw the structure of a molecule is to look up the SMILES description of the molecule on pubchem or another cheminformatics site. To give an example, the SMILES of caffeine is CN1C=NC2=C1C (=O)N (C (=O)N2C)C. Then, you can load this into a chemistry drawing program such as Chemdraw (commercial) or MarvinJS ( online demo) or ... ….

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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. Sign up to join this community

Here is how I understand it, armed with the new knowledge contained within the posts above: In the phosphate ion we have a central Phosphorus atom, with five valence electrons. This is bonded to four oxygen atoms, which have six valence electrons. Five P electrons plus 4 times 6 O electrons gives 29 electrons. I was looking for the pKa p K a of imidazole and found this pKa p K a table [1]: Compound Imidazolium 2-Aminoimidazolium 1-Methyl-2-aminoimidazolium 4,5-Dimethyl-2-aminoimidazolium pKa 7.38 8.46 8.65 9.21 Compound p K a Imidazolium 7.38 2-Aminoimidazolium 8.46 1-Methyl-2-aminoimidazolium 8.65 4,5-Dimethyl-2-aminoimidazolium 9.21.

s.w.o.t meaning Pura Vida Bracelets have become a popular accessory among fashionistas and trendsetters. These unique handmade bracelets are not only stylish but also support artisans in Costa Rica. If you’re wondering how to style and stack Pura Vida Brac...May 14, 2023 · Acidimetry is the specialized analytic use of acid-base titration to determine the concentration of a basic (synonymous to alkaline) substances using standard acid. Alkalimetry, is the same concept of specialized analytic acid-base titration, but for an acidic substance using standard base. – Poutnik. May 14 at 14:00. annual expenses definitionkansas concealed carry laws 2022 Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, ... Back to Chemistry Stack Exchange Return to the main site Tour Start here for a quick overview of the site Help Center Detailed answers to ...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. ffxiv viera unlockable hairstyles 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 ...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 ... Otherwise it is too hard to tell you whether you should choose chemistry or physics. can i take the rbt exam onlinebest ways to recruit volunteersidea 2004 summary Here is how I understand it, armed with the new knowledge contained within the posts above: In the phosphate ion we have a central Phosphorus atom, with five valence electrons. This is bonded to four oxygen atoms, which have six valence electrons. Five P electrons plus 4 times 6 O electrons gives 29 electrons. the muhfuqqin kitchen photos J.D.Lee writes in his book Concise Inorganic Chemistry:. An alternative method for determining the symmetry of the molecular orbital is to rotate the orbital about the line joining the two nuclei and then rotate the orbital about the line perpendicular to this.If the sign of the lobes remains the same, the orbital is gerade, and if the sign changes, the orbital is ungerade.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. statement of purpose for educational leadership programmu vs ku scorefederal income tax exemption 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.