Chemical Definition and 1000 Threads

Hello, I am studying Chemical Engineering at the University of Oklahoma. I have recently become very interested in Nuclear Engineering, but unfortunately my school does not offer the degree. Is it possible to go from a Chem E b.s to a Nuclear Masters? Thanks!

I'm starting college as a freshman in september, double majoring in chemical engineering and physics. It is one of the best engineering schools in the US, and I was accepted into the honors program. Physics is sort of a hobby for me. I just added it as a major because it wouldn't be difficult...

Title says it all. I've been wondering. The argument is, is there a minimal temperature required for any chemical reaction to reach its activation threshold? Or would the energylessness of the atoms prevent bonds from forming (or dissolving, I guess)? Conrad.

Does anyone know what compounds make up the resin used by resin type 3D printers? I need to know if it could possible react with some hexane, toluene, and other chemical solutions for sure, though I believe the resin to be fairly inert chemically. Thanks PF.

The title is self explanatory. Thank you

Since it is impossible to get certain cleaning solutions (in Canada, at least) like "Eclipse" (methanol) and pure isopropyl alcohol (from drug stores) is adulterated with some kind of greasy oils that leave smear marks behind, I would appreciate some help as to what chemical solutions might be...

The question in the attachment is from an old entrance exam for medical school. The correct answer is B. I realize that if I assign a 'point value' to the levels of reactivity for each of the letters i.e. the more reactive the higher the number T = 1 Q = 2 M = 3 J = 4 and that if...

Hello Pals, My fiance is going to school for chemical engineering. I have read the statistics pertaining to on-the-job fatalities and general risks associated with this career. I warn him daily that he will face substantial risk to his health resulting in, but not limited to; face splash...

hi I'm taking GCE O levels so this might give you an idea of my level of chemistry. For a reaction like 2H2O2-->2H2O+O2 and the question tells me it has an ΔH=-98kJ/mol so does it mean that when 2 moles of hydrogen peroxide decomposes to form water and oxygen, the net amount of heat generated is...

Why do we recognize a stream of sunlight going through the clouds causing a river to glitter as beautiful. Is it a chemical process? Why would we recognize something like that outside of ourselves that has no use as beautiful? And how would that fit into the theory of evolution and biology if...

My new plastic toy has a strong chemical smell, does anyone have any suggestions on how to remove this smell? Thanks in advance for any suggestions

Can we measure COD in Mol/Litres?

Do Chemical Engineers get to travel the world? Hi, just wondering if chemical engineers get to travel the world for their job? Like if you think of civil engineers, their companies will regularly contract them to do projects overseas, similar to mech and elec engineers, but for chemical...

Hi everyone! I basically understand how the materials used in the chemical reaction of a battery work but now I want to know why some batteries have different ratings of voltage. From what I've read, this depends on the materials that are used. What does it mean for some materials to do...

Homework Statement When copper (II) sulfate hydrate, a blue crystalline solid containing embedded water molecules (called a hydrate), is heated in air, it loses the water molecules and the blue solid is transformed to a white anyhydrous (no water) crystal known as copper (II) sulfate.Homework...

For any system where the thermodynamic limit exists, we know that the internal energy U, the entropy σ, the total particle number N and the total volume V are all extensive. Because of this, we know that the Euler relation holds true U = -PV + \tauσ + \muN and that the chemical potential...

I'm about to transfer out of a community college, and so far I got accepted to these two. I'm still waiting on Berkeley, but if I don't get in which of these two would be better if I want to go on to a phd program after undergrad? does it even matter? Thanks.

Hello, So presume we have a system in which a chemical process A + B -> X + Y is happening. We allow it to be a non-equilibrium process (so there will be an entropy production inside the system) but for ease we presume the system is characterized by the usual variables E, V, N_A, ..., N_Y...

Can someone help me understand the concept of chemcial equilbrium. I think I understand in a certain chemical reaction, know matter the amount of reactants or products, the equilibrium constant will remain approximatly the same. I don't fully understand how the equation to solve for the...

hi, can someone help me in understanding the difference between chemical potential and activity? Why it is important to know/determine activities of certain species in material growth? Given that activity is dimensionless quantity, what is it measuring? Also, what is the activity of pure...

I am working through a paper in which the chemical diffusion coefficient is related to the self-diffusion (or tracer) through the following derivation, on which I am a little hung up. AB2 metal. Overall diffusion D= XADB+XBDA meaning the chemical diffusion of B is...

Hello. I am trying to choose between studying chemical engineering (MSc) or getting a master's degree as an engineer specializing in math&physics (yes, you can do that in my country). For this I have questions: 1)Are chemical engineers needed in Space agencies? Perhaps working on spacecraft...

I'm only a Junior in High-School, but I know my passion resides in the field of Engineering. I love Trigonometry, Algebra, Chemistry. Whether or not i fail in some areas, and succeed in others, i always come out enjoying a process of learning in those areas. Chemical Engineering in a more...

I plan to attend Rose-Hulman Institute of Technology, beginning next fall, but am having trouble deciding on a major. I was accepted as a Chemical Engineering major, but am now having some second thoughts. Throughout high school, physics has by far been the most interesting type of science to...

I've been doing some research on majors and have narrowed my interests down to something involving a mixture of chemistry and math, possibly physics as well. From what I have found Chemical Engineering and Materials Science and Engineering seem to be closest to my ideal mix, though the...

hey guys I'm currently a first year engineering student and am at the point in my undergrad where I need to choose which engineering field i would like to go to. I've narrowed my choices to electrical engineering, material engineering, and chemical engineering. Could you please point of the...

Homework Statement When 1.000 mol PCl5 is intorduced into a 5.000L container @500K, 78.50% of PCl5 dissociates to give equilibrium mixture PCl5, PCl3, Cl2 : PCl5--->PCl3+Cl2 (this eq. is reversible) (a) calculate Kc and Kp (b) if the initial concentrations are [PCl5]=.500M...

hi i was wondering if a carbonate will react with carbonic acid. such as calcium carbonate with carbonic acid: CaCO3+H2CO3CaCO3+CO2+H2O. Thanks for the help!

Hello, I am 25 years old and am returning to school a few years after I received a business degree and working in the upper-management industry. After much debate, I have decided to go back to school and get an engineering degree. I have quite a bit of background in STEM fields from my...

Doing some fun problems in Keith Stowe's 'An Introduction to Thermodynamics and Statistical Mechanics'. Good book. Problem statement: A certain material vaporizes from the liquid phase at 700 K. In both phases, the molecules have three degrees of freedom. If u_{0} in the liquid phase is...

Hello! We know that the sun started with about more than 70% Hydrogen and more than 20% Helium. with other metals consisting the remaining few percent. Now throughout its lifetime, this composition changes, especially with regards to the hydrogen in its core because of nuclear reactions...

Hi everyone Homework Statement I got the three different diagramms (attached below) and I shall find a general chemical equation for all of them. Homework Equations - The Attempt at a Solution I think I know how to do the third one, but I have troubles with the first...

Please don't be bothered by my question, i know it sounds real elementary and it could easily be researched, but after doing so, i haven't been able to find anything on how or why the natural phenomenon of energy release takes place as chemicals react with one another. If you think about it...

Hi everyone; I use usual adhesive tape (like scotch tapes) in one of my project and I want to get rid off the tape and all its remains at latter steps of my work. I want to do it with chemical methods so I used dichloromethane. But it only dissolve the plastic part of the tape but sticky part...

Please check my answers. I tend to over-think and get simple questions wrong. A hypothetical cell membrane is positively charged on the intracellular side and negatively charged on the extracellular side. In this cell, the concentration of ion X+ in the intracellular space is high and in the...

What do you guys think of the Ion Proton 1 developed by a chemical engineer named Jonathan Rothberg? It can supposedly sequence most of a human genome for around $1000 compared to the past where had it costed millions. I don't recall quite clearly, but I think researchers at IBM are...

Hi everybody. I have been thinking about this a while and could not come up with anything. I was wondering if there any chemical energy storage method that would have these properties: 1) it would be easy to produce 2) it would be easy to extract energy from 3) it would not have any carbon...

Homework Statement Show that processes involving rapid chemical reactions are irreversible by considering the combustion of a natural gas (e.g. methane) and air mixture in a rigid container. Homework Equations Q_{in}+W_{e,in}-W_{b}=\Delta U+\Delta KE+ \Delta PE The Attempt at a Solution I...

I have an A.S. in Chemistry and a B.S. in Mathematics and I am considering trying to earn a master's degree in chemical engineer. After working for an analytical lab for six months in sample receipt and prep I have spent a lot of time trying to find ways to improve my career. I understand that...

Are there any major questions yet to be solved in these fields? Also where exactly does thermodynamics, heat fit into physics?Thermal Physics?

μ/T represents the change in entropy if we change the number of particles,, so according to the fundamental assumption of statistical mechanics μ/T should tell us about the tendency of two systems to exchange particles... but I am having a hard time imagining how rotational or vibrational...

Hi everyone, my first post on here. I was hoping someone might have a few words of advice/suggestions. I'm a current sophomore currently pursuing biochemistry/molecular biology. My goal is to work in drug development of some sort, at a biotech company or so. Basically, I like to design and...

2NO + 2H2 --> N2 + 2H2O The concentration of NO is 0.006 M and the concentration for H2 is 0.002M. How can I find the concentration of NO remaining when one-half of the original amount of H2 has been consumed? if you can also show me how it would be done if the reaction was not 1:1, that...

If we use heat and a catalyst to crack water into oxygen and hydrogen, how can the efficiency of the process ever be less than 100%? Every joule that doesn't crack open the bonds and end up in the chemical energy of the products must end up as heat, and then we're back at square one. I'm...

Hi guys I am a student of AP Chemistry. I am trying to understand the effect of temperature on equilibrium. I know that under the change of temperature, the equilibrium will shift to favor the endothermic process if heat is added and vice versa. But employing the Arrhenius Equation, I see a...

Also the chemical involve in the W and iodine. Thx

I’m not very well versed in chemistry so am asking for help. I’m looking for a couple of safe chemicals which combine to react (or dissolve etc.) endothermically. It doesn’t have to be an impressive reaction, it just has to be safe and not produce masses of gas (so that’s carbonate/ bicarbonate...

Copper + NaCl + H20 = >> ? Does anyone have any suggestions on what chemical reaction will occur in above example? Thanks in advance for any suggestions

Hi, wondering if you could help me. I want to find a chemical reaction that would involve: Reactant + Air (or gases present within)----Exothermic----> Harmless gas Any help would be appreciated if you knew of a chemical that I could use to react with air to produce heat and a...

Homework Statement I have a couple of problems here that are all part of one homework problem. A,B,C, and D. I have completed what I believe are the correct answers, but I really don't know for sure. This is an online chemistry class, and it really is not very good. I've watched about 3...