Hydrogen Definition and 1000 Threads

Hi, I'm having a brain fart. Consider the amino acid glutamate (glutamic acid): -> When it forms an ionic bond with Na+ to make MSG, the glutamic acid loses it's hydrogen on the right side. Is it that it was "oxidized"? Or what do we call the process where it loses the hydrogen...

As I know from the laws of chemistry,to form H_2 the H atoms must have opposite spin. What if they have the same spin? I mean, can an H atom rotate to swap his spin (i'm not expert of the dynamics of spin), or there is no way to couple them? In the case I have a gas of H with all of them...

I wanted to know whether H2S is a polar compound and hence does it have a dp dp interaction. An answer sheet says the H2S only has id-id. If this is true can some one explain it to me? cause sulphur is definitively polar, and considering h2s's V shape, it should be a polar molecule, thus having...

Homework Statement Consider a photon that is barely capable of causing a photoelectric effect when it strikes a sodium plate having a work function of 2.55eV.Homework Equations Find the minimum energy level n for a hydrogen atom that can be ionized by such a photon, and the speed of the...

Homework Statement In a classical model of the hydrogen atom, the electron moves around the proton in a circular orbit of radius 0.053 nm. What is the electron's orbital frequency? What is the effective current of the electron? Homework Equations Freq * Wavelength = Speed of...

If I add some HCl to water then I'll have H+ ions but for every proton there'll be be a Cl- counterion. I've never heard of a solution containing only the protons. You could make one if your conjugate base reacted with a solute to form a gas. The gas bubbles out and all you're left with are the...

Calculate the expectation value of the potential energy for an electron in a 1s orbital for a hydrogen atom Ive determined the potential energy operator to be V=-e2/4∏ε0r and a wave function of ψ= (1/4∏)1/2 therefore i get <V> = ∫∫∫ψ*Vψr2sin∅drd∅dphi integrals from 0 to r...

Homework Statement http://en.wikipedia.org/wiki/File:Aspart… What are the 2 most acidic hydrogens in this molecule?and why? Homework Equations The Attempt at a Solution I narrowed it to: 1) the H on the carbon wedge connected to NH 2) the H on the carboxylic acid COOH...

Hey everyone, I was just wondering, in a PEM fuel cell the Hydrogen ion diffusion through the membrane is an important step. But don't these ions need to diffuse through the anode as well to reach the membrane? Also, if this is the case and the anode is a metal like Pt, wouldn't the diffusion...

As part of my Intel Science Fair project "How to make Hydrogen a viable alliterative" I read that at 3,500,000 psi Hydrogen will become a "Solid" so that you can have more power in less space which will make the car much more efficient. I am doing this on a 1/10 scale. My question is what...

what happen at atomic level to hydrogen under high pressure ... why it be come metal? any explanation in term of band theory ? or Nearly free electron theory?

Energy level of hydrogen atom -- with the electron replaced by a positron The energy level of a hydrogen atom is given by (without fine structure consideration) Eh = -13.6 eV / n^2 Suppose -- if the electron is replaced by a positron, what would happen to this energy level? The resulting...

Homework Statement An electron in a hydrogen atom is described by the wavefunction: psi(r) is proportional to (psi(subscript 100)+2psi(subscript 210)-3psi(subscript 32 -1) -4psi(subscript411)) where psi(nlm(subscript l)) are the eigenfunctions of the hydrogen atom with n, l...

most probable radii in hydrogen...? i just started studying quantum mechanics in college...i was told that according to quantum theory the most probable radii of 1s 2s and 3s in hydrogen are respectively a 6a and 11a, where a=bohrs radius for 1st shell sir told me that we get these values by...

Hydrogen balloon naturally moves from low altitude to high altitude in Earth's atmosphere. Any object moves from higher to lower potential. So can we call low altitude high potential region?

At what distance do 2 hydrogen atoms (not ions) begin to attract each other? No, this is not a homework question. I am 58.

Hydrogen is such a peculiar element. It is placed in Group 1 of the periodic table. I can't find the reason why is it placed there. It exhibits none of the properties of that group 1 elements exhibit. One theory suggests that hydrogen can behave like a metal. Please explain how is that possible.

I had this problem for my physics class where we had a 20eV photon interaction with hydrogen gas. It takes 13.6eV to knock electrons off of the atoms from the ground state after the photon is absorbed by the hydrogen atom, but that leaves 6.4eV left over. Does all of this energy go into the...

What is the smallest amount of hydrogen needed so that fusion occurs automatically under its own gravity? How long would it last? Not homework.

If one were to subtract the kinetic energies of all fundamental particles within hydrogen, as well as all of the potential energy of all bound states between these particles, how much mass (as a percentage of the total) would remain? Ignore the kinetic energy due to the hydrogen's speed.And...

hi all, Real life industry question... An accurately calibrated cylinder of compressed gas sample of Hydrogen (certified 2% H2 and air 98%) is used to calibrate a hydrogen sensor by turning on its top regulator sample tap. It can be used for numerous calibration runs until it is empty. As H2...

Homework Statement 1)Determine the radius of the allowed orbits. Calculate the first orbit of Bohr's model for the hydrogen atom. 2)Show that the energy is quantized. Calculate the energy of an electron on the first orbit (fundamental state of hydrogen atom)Homework Equations L=n \hbar...

The wavefunction of hydrogen is given by \psi_{nlm}(r, \theta, \phi) = R_{nl}(r)Y_{lm}(\theta, \phi) If I am only given the radial part, and asked to find the expectation value of the radial part I integrate the square of the wavefunction multiplied by r cubed allowing r to range from 0 to...

Let's say I had a turbine in water, and I wanted to turn it based on hydrogen bubbling up from the water via electrolysis, how would I calculate the power gained from the flow of hydrogen/oxygen gases through it in a medium of water? I can calculate the buoyancy of these gases in water fine...

hello i going to make an moto bike of 50cc engine to work witn hydrogen... and my problem is : how many liters of hydrogen i vgot to pun in 1 litre of oxygen.. what carbirator i vgo to make.. or were i can take one li it for example the combution rating of fuel/oxygen is 14.7/1 i've...

I'm trying to plot the radial probability function for a hydrogen atom. I have the function itself (Psi2*4*pi*r2) my problem is that when I plot the function with angstroms on the x-axis, the y-values are larger than they should be (they look about right if I divide them by the bohr radius in...

Can someone tell me how you make hydrogen peroxide through electrolysis?

I have two big problems in my mind about hydrogen bond for many years. I have checked many textbooks but all of them fails to explain what I don't understand. 1. To form a hydrogen bond (particular strong attraction) Why it is necessary for a hydrogen atom to attach to a highly...

I am trying to find the reason why a helium atom cannot be turned back into a hydrogen atom. We know in a star that through nucleosynthesis helium is formed from hydrogen and the process continues to form heavier elements. Is there a similar, but in reverse process where lighter elements are...

Hello, I am currently reading about electromagnetic fields: In one of the examples in the textbook we calculate the electric field of a hydrogen proton. We then compute the electric force acting on the orbiting electron to be 8.2 \times 10^{-8} N So I thought I could get the...

Sorry to butt in on your form. Please can someone help me with this – I’m sure it’s simple to those who know but I have been thinking about these 2 problems for ages (and reading up on every website I can find) and still no answer. I am trying to get a basic understanding of this and seem to...

Is there any derivation of the bohr model for hydrogen using Ehrenfest theorem. References are appreciated.

I do not understand if you accelerate a hydrogen atom to 90% the speed of light its mass is greatly increased. Are the forces that hold it together increased? If not how is it different, will it fall apart? If the forces are increased in relationship to the mass of the atom the energy...

Hi I would like to know What the size difference ratio between Hydrogen and Oxygen gas atoms, in the form of the following question...' If i had two identically separate 1 liter containers, (one containing Hydrogen, and the other Oxygen), at the very same pounds psi, Which container...

Homework Statement Use [H_{0},r_{j}]=\frac{i\hbar}{\mu}p_{j} for the Hydrogen atom (where the j's denote the jth components in Cartesian coordinates) to prove that <n_{f},l_{f},m_{l,f}|p_{j}|n_{i},l_{i},m_{l,i}>=-i\mu\omega<n_{f},l_{f},m_{l,f}|r_{j}|n_{i},l_{i},m_{l,i}> Homework...

Homework Statement When specially prepared Hydrogen atoms with their electrons in the 6d state are placed into a strong uniform magnetic field, the degenerate energy levels split into several levels. This is the so called normal Zeeman effect. A) Ignoring the electron spin what is the...

Homework Statement a) 100 cm3 of 0.1 mol/dm3 of hydrochloric acid was added to 100 cm3 of 0.1 mol/dm3 of sodium hydroxide and a rise in temperature of 4 degrees was observed. If 200 cm3 of 0.1 mol/dm3 of hydrochloric acid and 200 cm3 of 0.1 mol/dm3 of sodium hydroxide were used, the rise in...

Homework Statement So I've been racking my brain around the hydrogen mean values. \left\langle \frac{1}{r}\right\rangle=\frac{1}{a_0n^2}, that I can solve with the recurrence relation in Schaum: \left\langle r^k\right\rangle=\int_0^\infty r^{k+2}|R_{nl}(r)|^2dr by simply putting in...

Homework Statement In different (scientific) sites I find different values for MF of H-1 ranging from 0.3 to 0.6 Tesla. Isn't there a generally acknowledged value? what about H-2 and H-3 ? The Attempt at a Solution using the general formula I get 1/ 8 tesla, that formula it not valid...

Every water molecule is H-bonded with up to four other molecules (two through its two lone pairs, and two through its two hydrogen atoms. These 4 intermolecular hydrogen bonds are what contribute to water's high boiling point.. My textbook compares this with Fluorine, which it says can...

Hi, my name is Remi, I'm a game developer from Harvester Games. I have an important question regarding hydrogen sulphide. Do not worry- I am not planning to commit suicide with it, but I need it for a puzzle in my new game, The Cat Lady. At some point in the game the game's protagonist is...

So I'm running a current through distilled water with baking soda to produce hydrogen (to make stuff float :) ). I'm using carbon graphite electrodes and baking soda to avoid any dangerous gases like chlorine. Now its been almost a decade since I took chemistry classes and I'm wondering...

first off, thanks to any that respond w useful info :) the end answer i need to find on the first topic is how many atoms of hydrogen are required to propel a mass of "x" at an acceleration of 1g in space (assuming no gravitic influence) but i would settle for how to figure out what the fuel...

Is there a simple method or inexpensive hand-held device available for Hydrogen gas detection?

So, I was just fooling around on Google Translate, and I decided to translate from Dutch to English for no good reason. I typed in hydrogen, and got back waterstof. Water-stuff! Or alternatively, water-dust, or water-material. So, I thought to myself "Hey, oxygen is also in water. Let's...

Homework Statement Calculate the threshold ionization intensity for hydrogen gas. The attempt at a solution The way I tried to work it out was to use the field intensity of air which breaks down at, 3x10^6V/m. The ionization potential of oxygen is 13.618ev, 14.534ev for nitrogen and 13.598ev...

Hi everyone, There is problem that asks how many hydrogen atoms are there in sun for each helium atom. I don't know which solution is correct: 1) to count all the hydrogens and heliums participating in one solar pp chain, or, 2) as X=0.71 and Y=0.26, there is (0.71/0.26)*2 H for each He...

Most common isotopes of He has 2 neutrons, Li has 3 neutrons and so on right, until Z increases to higher numbers and we get to elements like iron, where the nucleus doesn't have equal numbers of protons and neutrons anymore. But why isn't the number of protons and neutrons equal in the most...

no of line in line spectrum is equal to jumps of electron from one shell to another. Am i correct. IN my book it is written that if a electron in hydrogen jumps from n1 to n2 then number of spectral lines is given by formula {(n1-n2)(n1-n2+1}/2. so consider a electron jump from 4th shell to 2nd...

I noticed many PF threads mention ground state of Hydrogen atom. At the same time it is two body problem considered to be solved by separation of variables. It is true, of course, that we can find basis wave functions (solutions of Shroedinger equation). But why does anybody think, that...