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  1. Atomic number of helium , Z = 2 Rydberg constant, R = 1.097 × 10⁷ m⁻¹...

    1 Answers · Science & Mathematics · 22/09/2020

  2. Who says anything about what happens at 0 K?  0 K cannot be achieved. But I would guess the answer to the question to be: because hydrogen has hydrogen bonds and helium does not.

    1 Answers · Science & Mathematics · 19/06/2020

  3. That's funny, we released helium balloons with small keychain lights on them so people would think they were UFOs.

    7 Answers · Politics & Government · 03/02/2020

  4. Depends on how full they are... as they rise, the outside pressure decreases, and - this expands the balloon, so... they can pop.  Or, they can float in the breeze, and eventually lose their internal gas, and drop back to Earth.

    8 Answers · Science & Mathematics · 06/07/2020

  5. per photon, E = hc/λ = 6.626e-34kg·m²/s * 3e8m/s / 633e-9m E = 3.14e-19 J power through the hole is P = 6.00J/s * (1.60/6.00)² = 0.427 J/s 0.427J/s / 3.14e-19J/photon = 1.36e18 photons / s If you find this helpful, please select...

    1 Answers · Science & Mathematics · 16/11/2020

  6. Given: Pi = 66.6 kPa Vi = 100 mL Vf = 250mL Ti = 20 oC = (20.0+273) K = 293 K Tf = 15.0 oC = (15.0+273) K = 288 K use: (Pi*Vi)/(Ti) = (Pf*Vf)/(Tf) (66...

    1 Answers · Science & Mathematics · 22/05/2020

  7. ((10.0 mol x 5.00 bar) + (5.00 mol x 20.0 bar)) / (10.0 mol + 5.00 mol) = 10.0 bar

    2 Answers · Science & Mathematics · 04/10/2020

  8. (767 L) x (–29.1 + 273) K / (17.9 + 273) K x (752 mmHg / 337 mmHg) = 1435 L

    1 Answers · Science & Mathematics · 24/04/2020

  9. He will have a great view of the stars tonight.

    1 Answers · Pets · 29/12/2020

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