Chemical Definition and 1000 Threads

Assuming that super-heavy atoms were stable (at least up to 118), what would be some interesting chemical properties of some of them?

So, let's say we have an elementary reaction: 2A --> C The rate of this reaction is (according to IUPAC: http://goldbook.iupac.org/R05156.html) - \frac{1}{2} \frac{d[A]}{dt} = k [A]^2 If we integrate this we get a certain integrated rate law (second order) However, if we multiply all of...

Hey everyone. I hope someone can help. I'm off on this by several factors so I'm wondering what I may be inferring incorrectly. Homework Statement Express the chemical potential of an ideal gas in termps of T and V: \mu = c_{P}T - c_{V}T\ln T - RT\ln V - s_{0}T + const Homework...

Homework Statement In a lab we are adding ascorbic acid (C6H8O6) to iron(III) to reduce it to iron(II). I need to come up with a chemical equation showing this. I do not know how to come up with products of the reaction besides iron(II). 2. The attempt at a solution Fe(3+) + C6H8O6 => Fe(2+) + ?

I'm still deciding between these two majors. I have some interests in chemistry but I don't want to stuck with mundane mixing chemicals in a lab all day. I like MAE because I prefer hands on work (but I might hate it when I'm older) and I like to build and fix things with my hands. I guess I...

Hi, I'm almost finished my BSc degree in Chemistry in the UK and I'd like to move into Chemical Engineering. My options are: MSc Process Engineering; PhD Chemical Engineering; BEng in Chemical Engineering at the Open University. Which route do you guys think is best? Are there...

This at first may sound like a question based in chemistry, but I feel it is more of a particle physics question. When a chemical reaction occurs, it can be exothermic or endothermic. It is my understanding that if bonds are formed, energy is released, and when bonds are broken, energy is...

Chemical potential of a substance i in an ideal solution is given by: \mu_i = \mu_i^0 + RT \log x_i (where \mu_i^0 is a chemical potential of pure substance i and x_i is mole fraction of i) In nonideal solution x_i has to be exchanged with activity coefficient a_i : \mu_i = \mu_i^0 +...

In order to understand some areas of chemistry I have gotten interested in, I believe it in my best interest to learn reaction equations. Like every other reality situation, there are problems. For one, my school doesn't have the ability to teach me this, secondly, online ones for me are harder...

Is anyone familiar with any chemical reactions that release both oxygen and carbon dioxide gas as products? Or any reactions where oxygen and carbon dioxide are both reactants? Thanks.

There are two ways to form these: through Covalent and Ionic bonding, correct? But I have always wondered something about Ionic bonding, if two atoms are attracted to each other due to opposite charges, shouldn't they be close enough to make the electrons be attracted into the opposite atom and...

Homework Statement A skateboarder with his board can be modeled as a particle of mass 79 kg, located at his center of mass (which we will study in a later chapter). As shown in the figure below, the skateboarder starts from rest in a crouching position at one lip of a half-pipe (point circle...

hi, DNA and RNA seem to be very peculiar molecular structures that are able to replicate themselves, and they are unique regarding this point, right?. But which chemical "magical" phenomena is responsible for this ability to reproduce?

I know that chemical reactions can emit light and heat, and these are part of the electromagnetic spectrum. But are there any chemical reactions that can directly produce electromagnetic emissions in the radio part of the spectrum?

I have a problem in which It asks to find the equilibrium concentrations but it only give the value of the equilibrium constant and the chemical equation. Is this even possible to solve or does it not have enough information? Here is the problem Determine the equilibrium concentrations...

Hello, As mentioned in my title, I am currrently a freshman studying Chemical Engineering. I chose chemical engineering because I am a thinker, someone who wishes to attempt to solve some of the world's most critical problems through the use of my acquired knowledge in engineering and...

Why some of the chemical reactions are slow? Is it directly proportional to the size and shape of the molecules - since the complex shape makes 2 molecules less probable coming in contact with the appropriate alignment for the chemical reaction to happen? I'm trying to find an answer within...

Homework Statement Our chemistry teacher just learned about chemical kinetics. I've been working with the calculus teacher to find out how to determine instantaneous rates exactly. We don't have any equation. Could someone explain this please? Homework Equations The Attempt at a...

So I have anida about wanting to major in chemical engineering but I am afraid I might be going into something that I might be underestimating. Can anyone with experience in this field let me know how it is interest wise, because I already know its a lot of work but i want to know if you think...

I had interest in Chemical Engineering since 9th grade. But now when I'm in 12th, Mechanical engineering gained my interest. When I looked at the subjects taught in these branches, some were out of my interest. Now every other branch (aerospace, material science etc) I see, I don't like all...

Hey all. This really has more to do with uoft. I noticed that the grad program in ChE at UToronto has fewer course requirements, and fewer course options than the other main engineering specializations. I was wondering why that was so. In contrast, I noticed that McGill's grad ChE program...

In the explicitly-unsolvable Hamiltonian for a chemical system, approximations are made to solve the energy of the system. In particular we see CNDO (ZDO), INDO and MNDO theories. CNDO - complete neglect of differential overlap; two-center electron integrals are zero. INDO - intermediate...

Homework Statement A saturated solution of iodine in water contains 0.330g of I2/L. More than this can dissolve in a KI solution because of the following equilibrium- I2(aq) +I-(aq) ------> I3- (aq) where 2 and 3 are subscripts and - is negative charge A 0.1M KI solution actually...

Homework Statement At a certain temperature, the equilibrium constant for the gaseous reaction of CO with O2 to produce CO2 is 5000 lit/mole. Calculate [CO] at equilibrium, if 1 mol each of CO and O2 afre placed in a 2 L vessel and allowed to come to equilibrium. Homework Equations...

Homework Statement Why don't we take into consideration the concentration of pure solids and pure liquids in equilibrium constant expression? I read that their concentration per unit volume does not change. If the concentrations (moles per litre) don't change then it won't undergo any...

what determines what order the atoms in a formula are written? for example, why is it CO2 and not O2C? It doesn't appear to be ordered by atomic weight, place on the peridoic table or alphabetically so what is it?

I'm trying to think of a way to take a piece of aluminum foil and chemical separate the atoms 1 by 1. I was originally thinking of trying some sort of Electrolysis type reaction by turning the Aluminum into Aluminum Oxide... though I'm still searching for the chemical reaction/method to...

Dear Kind and Knowledgeable Contributors, I am a graduate student in my first year debating between completing the rest of my PhD. program in Chemical Engineering or Materials Science and Engineering. My university allows me to switch into either field. I believe I am equally capable in...

Homework Statement newbie here.. Blood carries a drug into an organ at the rate of 3 cm^3/sec and leaves at the same rate. The organ has a liquid volume of 125 cm^3. If the concentration of the drug in the blood entering the organ is .2g/cm^3, what is the concentration of the drug in the organ...

Homework Statement What physical and chemical changes occur when a wax candle burns? Homework Equations The Attempt at a Solution

Homework Statement Complete and balance the following chemical equation BaO + P2O5 Homework Equations The Attempt at a Solution The only one possible product I've been able to arrive at is Ba(PO3)2 but this is based on no science whatsoever. I can't find anything in my text...

Homework Statement Write and Balance equations for the following reactions: zinc sulphate + barium nitrate -----> Homework Equations The Attempt at a Solution I know that the formulas for the reactants are : ZnSO4 + Ba(NO3)2 ----> I'm just having a really hard time...

Homework Statement I understand how to determine the order of a rxn based on a series of experiments one divides one into another to obtain a ratio and then determines the power to which one is raised to determine the order. Typical data collected would be: Ex1 [A] .2 mol = Initial rate...

Homework Statement Write a balanced equation for: 1. the reaction of chromium with sulfur 2. the reaction of bismuth with oxygen Homework Equations Chromium is a transition metal and sulfur has a 2- charge. The Attempt at a Solution For the first one, I'm thinking that...

I have an idea of creating a rocket using mentos and diet coke, but the failure rate is really high. I also tried reacting HCL + Mg in order to create pressurized Hydrogen Gas in the bottle, in order to make the rocket thrust upwards. I also used alka seltzer in creating a potential rocket, but...

First off, let me make this clear, I am not: promoting the use of drugs or asking how to synthesize LSD-25. I've become curious about the chemical aspects of LSD-25, such as, how does this drug actually affect the central nervouse system, why does it have such dramatic affects on the minds of...

I'm planning on going down the medical path. Will a Bachelor in each of these prepare me for the MCAT and what I'll see in medical school? Less importantly, how "sellable" are these degrees relative to each other (should the medical path not work out)?

In chemistry I learned the bonding rules that I learned for various molecules never mentioned anything about the different energy levels in electrons. Now that I know electrons can have various energy levels from absorption of photons, I would like to know if this changes the behavior of...

Does it make sense to pursue a BS in Chemical Engineering, and then go into graduate school for a MS or PhD in EE? Or does that pathway make little sense.

I’d like to be a nuclear engineer. I live in South Carolina and I’ve been accepted into Clemson for chemical engineering and also NC State for nuclear. I hear a lot of people have gotten their bachelors in something else and then get their masters in nuclear. Since I plan on getting a...

Hi, Thanks for taking the time to read this! I'm student chemist (only 21), and last week I got exposed to a lot of methyl iodide when I spilt some dissolved in DCM onto my hand, although I was wearing nitrile gloves I think the chemical passed straight through, I had some skin irritation...

I wanted to know what the real difference is between a major in chemistry and a major in chemical engineering. I know that Chemical Engineering would be focusing mostly on synthesis and creating new materials while a Chemistry major would be much more broad and could be analytical as well as...

Homework Statement What simply is Chemical Energy? Homework Equations N/A The Attempt at a Solution I found this: http://wiki.answers.com/Q/What_is_chemical_energy But it doesn't read right..it's not all to it than that, but I want to know in simple terms what chemical energy...

Homework Statement 1) Use Le Chatelier's prinicile to explain how a shift in the equilibrium H2CO3(aq) ⇌ H2O(l) + CO2(g) causes a soft drink to go flat when its container is left open to the atmosphere. 2) How might the addition of a noble gas to the reaction vessel affect this equilibrium...

Hey. I am currently studying chemical thermodynamics and have reached the section on solution thermodynamics. For a pure liquid: \left(\frac{\partial g}{\partial P}\right)_T=RT \left(\frac{\partial ln(f)}{\partial P}\right)_T Where g is the molar gibbs energy P is pressure T is...

Hi Why photon has zero chemical potential. please answer this question clearly.

I am having a problem with my kinetics lab. There are just three questions I can not understand. 1. Determine the order with respect to HCl. Explain. 2. Determine the order with respect to Sodium Thiosulfate. Explain. 3. Why rate values for this experiment not adequate to achieve an accurate...

Hello all, I am an undergraduate working on a project for water purification in search of a water soluble compound (organic/inorganic salt, gas), preferably of low molecular weight, which can attain solubility of more than 3 Molar at Room Temperature and Pressure (Temp can be more or less...

Hey all the people reading this, Just wondering if anyone can explain how a equilibrium system changes with a increase/decrease in temperature occurs. I've been taught that: If my reaction is exothermic i.e. reactants -> products + energy; and i am going to decrease temperature it would be...

Homework Statement Which of the following are true statements about the above voltaric cell and the resulting cell chemical reaction ? a) The zinc electrode is the cathode b) Zinc will be consumed before copper c) Electrons flow from the copper electrode to the zinc electrode d) The half...