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1. ### How do I find the frequency of a photon emitted when an electron in a hydrogen atom jumps from E1 to E2?

First, when the electron jumps to a higher level, it doesn't emit a photon, it must absorb a photon. Electron orbital energy Ee is minimum (largest negative value) at level 1 and increases at higher levels. At an infinite distance...

3 Answers · Science & Mathematics · 08/05/2010

2. ### what is the end of our universe dark and cold 0 kelvin hydrogen atom or radiational universe or photon age?

We do not know yet. A lot depends on what we find in terms of 'dark matter'. We think there is more mass in the universe than we can now account for, and that extra mass - that extra gravitational force - could be enough to tip the balance. But as things stand now, it...

2 Answers · Science & Mathematics · 12/10/2009

3. ### I want to lift a man who averages 180-210 lbs. At sea level with hydrogen, how many square feet would I need?

DECATUR - Have you ever dreamed of grabbing a bunch of helium balloons and floating off into the wild blue yonder? Well, John Ninomiya of San Diego had that dream - and he's made it a reality as...

4 Answers · Science & Mathematics · 28/09/2006

4. ### What is the shortest wavelength of light that can be emitted by a hydrogen atom, if the electron is initially in the n=8 level?

1] Find the energy going from n=8 to n=1 2] Use E = h x freq = h c / wavelength to find wavelength shortest wavelength is max energy

1 Answers · Science & Mathematics · 09/10/2017

5. ### The total mass of the hydrogen gas in the Hindenburg zeppelin was 18,000 kg. What volume did the hydrogen occu?

1] Convert 18,000 kg to grams 2] convert that to moles 3] With no temperature or pressure specified it is not possible to give a volume. However, you could assume STP but that is pretty cold, so NTP [room temp = 20C and one atm] where...

1 Answers · Science & Mathematics · 31/10/2013

6. ### given En=-13.6/n^2 ev calculate the energies of K,L,and M shell electrons of the hydrogen atom in ev.?

The K, L and M shell correspond to n=1, 2 and 3 respectively. So the energy of the K-shell: -13.6 eV / 1^2 = -13.6 eV L-shell: -13.6 eV / 2^2 = -3.40 eV M-shell: -13.6 eV / 3^2 = -1.51 eV

1 Answers · Science & Mathematics · 13/01/2013

7. ### I Need Some Physics help!!!?

A scientist would argue for supply; hydrogen is readily available from electrolysis of water... environmentalist would argue for clean emissions; hydrogen burns to water and therefore does not add to the...

1 Answers · Science & Mathematics · 27/11/2012

8. ### Physics Question i simply CANNOT figure out!?

For protons (hydrogen nuclei), the Larmor frequency is 42.58 MHz/Tesla...

1 Answers · Science & Mathematics · 05/07/2011

9. ### Quantum Mechanics Problems ( NEED Help)?

1. Energy levels for hydrogen atom are given by: E_n = -13.6/n^2 eV For...

1 Answers · Science & Mathematics · 07/12/2008

10. ### Help with grade 12 physics?

...ok.. so the final energy level that the electron lands on is the series of hydrogen. when an electron falls to level 1 it is called the Lymen...

2 Answers · Science & Mathematics · 17/06/2010