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  1. Ejection of a level 1 electron -- refer to other recent answer.

    1 Answers · Science & Mathematics · 19/10/2020

  2. photon's energy E = hc/λ = 6.626e-34kg·m²/s * 3e8m/s / 1090e-9m E = 1.82e-19 J = 1.140 eV After absorbing this, the electron's energy is (-1.512 + 1.140) eV = -0.372 eV

    1 Answers · Science & Mathematics · 19/10/2020

  3. shortest wavelength means highest frequency and therefore highest energy. E = 13.6eV * (1/n² - 1/m²) This is maximized when the parenthetical value is 1, which is when an electron at level 1 is...

    1 Answers · Science & Mathematics · 20/10/2020

  4. pV = nRT 100e3Pa * (π/6)(3.2m)³ = n * 8.314J/mol·K * 298K n = 692.5 moles mass m = 692.5mole * 2g/mol = 1385 g = 1.385 kg Hope this helps!

    2 Answers · Science & Mathematics · 09/10/2020

  5. A hydrogen -bomb is a nuclear bomb As far as I know, every Hydrogen ...fusion-process going. Atom-bombs use fission (uranium, plutonium ?) Hydrogen -bombs ("thermonuclear" bombs) use fusion

    11 Answers · Science & Mathematics · 02/09/2020

  6. Water is a polar molecule, allowing for the formation of hydrogen bonds. It takes a lot of heat to increase the temperature of liquid...

    1 Answers · Science & Mathematics · 08/08/2020

  7. You can find the energy of the emitted photon with E = hc / λ I get E = 1.93-18 J = 12.1 eV Then by Rydberg E = 13.6eV * (1/1² - 1/n²) Set them equal and solve for n. I get n = 3 If...

    1 Answers · Science & Mathematics · 29/06/2020

  8. ...empty. There are molecules of simple elements like hydrogen just floating around. The Bussard engine generates a...

    3 Answers · Science & Mathematics · 09/06/2020

  9. ... something.  The iron and the anti iron has less mass than the hydrogen and anti hydrogen .  This mass defect is equivalent to the energy gained...

    3 Answers · Science & Mathematics · 28/05/2020

  10. 3.11×10^9  (even if it were correct) loses you a mark for ‘missing unit’. (a) The centripetal and resultant force are the same thing in this situation, so we just need to find the centripetal force: F = mv²/r = 9.11*10^-31 * (2.29*10^6)² / (5.23*10^-11) . .= 9.13*10^-8 N...

    2 Answers · Science & Mathematics · 06/05/2020

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