Synthesis Definition and 166 Threads

Dear all, I am preparing nano Cu particle by reaction of CuCl2 with NaBH4 in PVP solution. CuCl2 and PVP were mixed ultrasonically in pure water. Before dropping NaBH4 solution, the water was bubbled by N2 to remove O2. After dropping NaBH4, the solution turns into gold color. This means that...

Hi I wanted to check how to do a Fourier synthesis to recreate a signal from a frequency spectrum. So I basically have the frequency spectrum so I have the power of the fundamental frequency and the harmonics. Is there a way I can do a synthesis to create a time signal?

Hi, all. Can anyone who use or used explain the difference between examples in Norton's machinery books in chapter on graphical linkage synthesis, one is a rocker output-two positions with complex displacement and the other is coupler output-two positions with complex displacement.

I have attached a file of the alcohol I need to synthesize and my futile attempt... I was thinking of using a hydration reaction to make the alcohol from the alkyne group. So basically I would mix the alkyne group with H2O and some how produce the alcohol group. Am I heading in the right...

I've been asked to synthesise this ferrocene based macrocycle (shown in picture below) starting from ferrocene and other available materials from Aldrich. I need to make sure molar equivalents are spot on with reagents. Can anyone help please?

Hi, Take a look at this synthesis of aspirin. Because I am noob, please bare with me. On the top there you can see how the acetic anhydride gets attacked by the H plus ion. I can't understand why the h plus ion gets bonded there. I`ve been trying to find the answer to this question for...

Hi all, I was just wondering, what stimulus activates protein synthesis? I already know the steps of protein synthesis but is there a particular mechanism that triggers the RNA polymerase to start transcription? In other words, how does the body know when to produce proteins? Is it possibly...

I've just been reading a little bit about attempts to create element 120 back in 2007. Do you guys think that it will be possible to create such an element?

I've been looking into expanding some research time into carbon nanotube synthesis thinking that it was still an obstacle to be able to produce a carbon nanotube long enough to be used for anything. I just found a YouTube video from rice university where they used a wet spin technique to produce...

Hey everyone! I am currently working on a project regarding the synthesis of variously substituted isatins using the Sandmeyer methodology, involving the condensation of chloral hydrate, hydroxylamine and substituted aniline (in this case the 4-ethylaniline) to nitrosoacetanilide with...

I was searching some info in this forum and I found something here: https://www.physicsforums.com/showthread.php?t=160186 As far I know you've to mix carbon dioxide and hydrogen and the result is methanol. I want to understand more technical information, like the amount of each gas that...

so i know that 2-pentanol can be synth'd from 2-pentene+H20 however, i'd like to know if its possible to synth the molecule via a fermentation reaction all i have so far: __ ______ --> __ C5H12O + __ CO2

given humans have 64 possible codons, I am imagining a crowd of tRNA, each carrying an amino acid, swarming clumsily with random thermal motion around a ribosome with a feed of mRNA. How do the tRNA anti-codons find the right mRNA codons so quickly?! I saw a video that shows the amino acids...

Homework Statement I am not able to clearly understand the role of t-RNA in the synthesis of proteins using m-RNA as a template. please explain how does a t-RNA supply an amino acid?? Homework Equations The Attempt at a Solution

Wouldn't you need an ATP to actually add the P to ADP? ...So then nothing would really be accomplished because you'd have to use an ATP to make a different ATP. Or is there a different type of energy that can add P to ADP? My book says that the ADP + P reaction uses energy from...

The standard model was created, not to conform to anyone's a-priori theoretical ideas, but just to match experiment. In the decades after that, we had the long march through unifying ideas that culminated in M-theory, and the creation of thousands of models of BSM physics, featuring...

A student I am tutoring has asked me to help him formulate a synthesis pathway for the compound N-ethylpent-4-enoate. I have spent countless hours trying to determine the structural formula for this compound without success. I must be missing something so obvious... Like leaves in a...

I know that first we have to add H2 and a Lindlar catalyst in order to produce what is the reactant. I thought adding O3 would be an ozonolysis reaction. An ozonolysis reaction should yield this: I don't know why they added the Zn and CH3CO2H, though. What does this even do in the...

Hello, I am doing an experiment in which I will have a halophenol, and with KOH in ethanol and an alkyl tosylate, I will need to create an ether. The first step is to add the KOH and alkyl tosylate, and I should almost have an ether (ring with halogen attached to it and an OR hanging off...

Homework Statement The partial burning of coal in the presence of O2 and H2O produces a mixture of CO(g) and H2(g) called synthesis gas. This gas can be used to synthesize organic compounds, or it can be burned as a fuel. A typical synthesis gas consists of 55.0% CO(g), 33.0% H2(g) and 12.0%...

Hi all! I am currently doing trials on different fertilizer production methods. I want to make urea sulfate crystals from fertilizer grade urea granules (46% N) and sulfuric acid. I suspect it would be a straightforward process, dissolve the urea in acid and precipitate the crystals and...

There have been some recent announcements in the news about the synthesis of Uranium Nitride. One announcement from Los Alamos National Labs mentions the use of photolysis to achieve the desired material...

Hello, is there anyone knows the kinetics data of methyl benzoate synthesis by fischer esterification?? (activation energy & E estimation methode, or any experiment that involve temperature variance),, I had trouble in calculate reaction rate constant by the function of temperature... I only...

Homework Statement I'm having a hard time deciding exactly what the mechanism would be for CH3CH=CHCH3→CH3C\equivCCH3 Homework Equations The Attempt at a Solution My professor only explained half of the mechanism quickly assuming the rest would be obvious, so I know that it will...

Given 3 molescules: 1-chloropropane, 1-butyne, and a benzene ring, how do I synthesize 1-butyl-3-propylbenzene? my question is, how do I get 1-chloropropane or 1-butyne on the ring without having branching? these 2 must be the starting material. I don't see how F&C alkcylation would work.

Homework Statement http://img51.imageshack.us/img51/9563/chem3.png Homework Equations The Attempt at a Solution I know the answer has to be a or c because you need the ammonia to make this reaction happen but I don't know whether you would want to use 3-oxobutanenitrile or...

Homework Statement Hi, I am trying to complie my counter (writen in system verilog) using synopsys design compiler. It comes out this error: The expression in the reset condition of the 'if' statement in this 'always' block can only be a simple identifier or its negation. (ELAB-303) ***...

You are comparing two cultures of cells. One undergoes cellular respiration and one ferments. Both cultures produce ATP at the same rate (for example, 100 ATP/msec). If this is true, what else would you observe about the fermenting culture? Choose /any that apply. a. It would require more...

Can anyone help me describe the steps of the enzyme synthesis diagram. Please describe each step 1, 2 ,3 http://www.bbc.co.uk/scotland/learning/bitesize/standard/biology/investigating_cells/enzymes_and_aerobic_respiration_rev4.shtml THANK YOU

Could anyone tell me something about colloidal synthesis of nanoparticles in general? I have searched a lot and couldn't find any general explanation. Every text is written about some certain kind of nanoparticles and all of those methods are very different. Thank You!

Hello, I'm not sure if this is the right place to write this thread, but I have a question about attempting to synthesize a piano in MATLAB. I am very new to MATLAB and DSP in general and my project is trying to create a piano sound using whatever means (FM synthesis, additive synthesis...

hey everybody, I am a newcomer here, just stumbled upon this forum whilst reading about different university programs. i would really appreciate any advice regarding an academic plunge into the engineering field as a means to learn more about music synthesis, particularly analog synthesizers...

I'm working on the mathematically modeled piano synthesizer. Right now I'm using modal based approach, where the sound is formed by a sum of exponentially decaying sinusoids (harmonics). Right now I can calculate frequencies of sinusoids (taking inharmonicity into account, of course). For...

Homework Statement A student wants to synthesize 3-methyl-3-pentanol. They react 2.3 equivalents of ethyl magnesium bromide with ethyl acetate, and then quench the reaction with sulfuric acid. 1. what is the product of the dimerization reaction? 2. What is the product from the reaction of...

Hello, If I can make any number of waves (n) all with the same phase but all within a frequency range of 100-200hz, what are the ranges of frequencies I can make when adding them? So would I be able to make a wave with frequency 400hz, or 25hz, using additive synthesis and these constraints...

" Write an alternate reaction that can be used to prepare the same product that we got in our lab ( changing the metal in the alkoxide or halide leaving group is not sufficient.) Explain the reaction you used, is it expected to be cheaper cost wise, and or produce a higher yield, based on the...

This is the link for the assignment: http://imageshack.us/f/840/assignmentsynthesisofev.jpg/ Homework Statement Given in the link Homework Equations Why would the proposed synthesis be successful if the reaction stopped after 2 hrs? How does H attack compound 2 to create compound...

Homework Statement I've been asked to explain how would I synthesize an organic compound, its structure is attached as an image (first attachment) , could you help me figure it out? I'm supposed to start from benzene The Attempt at a Solution So far, I've got a big part of the...

So I'm performing the reaction using: urea + diethyl n-butylmalonate ----NaOEt---> n-butylbarbituric acid My question is, after adding everything, you mix it and heat it, what is the solid that separates during this reaction? I've been thinking it might be diethyl n-butylmalonate but...

Okay so besides anhydrous diethyl ether, what other solvents could I use for a Grignard? What makes it a good solvent and what makes something a bad solvent? I know we want something that isn't miscible with water in the least bit because this would kill the reaction, but what else? Thanks

Hello! I am at a loss as to the cause of an energy potential from a concentration gradient. Take for example the H+ concentration gradient across the innermembrane in mitochondria. The greater concentration of H+ in the intermembrane space relative to the matrix results in an electrical...

I am a high school chemistry AP student. In class, my teacher told us about how benzene's delocalized ∏ electrons can donate to a metal but it is not a strong bond. I wanted to know if it was possible to make a coordination compound that was also a polymer by using a biarene ligand, one end...

Homework Statement I'm a little confused as to how the nucleolus in a eukaryotic cell manages to synthesize proteins. For example, in the nucleolus, does it contain DNA that it uses to synthesize ribosomal RNA, which then synthesizes ribosomal subunits? Then the ribosomal subunits go out into...

Is there a way to synthesize glucose, or any other high energy sugars, from simpler compounds? What are the compounds and how can they be converted into glucose? Can you describe the reactions that take place to form glucose? This is what I mean, as an example: Say we have methane, or CH4...

I have been thinking about attempting a synthesis of nitrobenzene compounds, with a long-term prospect of synthesizing aspirin. I have some questions regarding the synthesis. During the addition of the nitro group to benzene, I only want molecules with a single nitro group. How do I...

? Or the process chemistry behind the synthesis of Carbon 60

No, this isn't a homework question... Would it be feasible to use a tertiary haloalkane with sodium ethoxide, then use the ethanol formed from the deprotonation of the haloalkane in the E1 reaction for the synthesis of aldehydes or keytones? Just thinking it could be an alternative way...

I'm working with a television production company on a new project - we're looking at using "backyard methods" to produce diamonds (nothing special, we'll be happy with industrial grade for the show), namely using an unconventional technique reportedly used by the soviets during the cold war...

I am interested in reactions of the type C2H5COCH3 + KH -> C2H5COCH2K + H2 In this paticular reaction, I understand that the participating hydrogen is beta to the carbonyl group since the oxygen's electronegativity makes the beta-hydrogen atoms acidic, and KH acts like a base. However, would...

Hello everyone, Quick question. I can understand proteins are needed to make everything in the cell, so if you inhibit bacterial protein synthesis, cell division can not occur. However my question is does the DNA replicate and divide, and then the cell can not make other things they want so...