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  1. P = nRT / V = (0.0135 mol) x (62.36367 L mmHg/K mol) x (50. + 273) K / (0.224 L) = 1214 mmHg

    2 Answers · Science & Mathematics · 11/03/2020

  2. Helium /Atomic mass 4.002602 u, and C 12.0107 u He (4.002602) x 3 = 12.007806 g He - C = 12.007806 g - 12.0107 g = -0.002894 g (mass lost) E = mc² = 0.002894 g(1kg/1000g) *299792458)² = 2.60100 × 10^11 J

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

  3. Helium and Argon. They are both noble gases and their outer electron valence she's are completely filled with electrons.

    5 Answers · Science & Mathematics · 28/01/2020

  4. ... radius = 6.73m balloon mass = 920kg density of air (pA) = 1.29 density of helium (pH) = .179 so no we will set up our equation the buoyancy force (Fb...

    2 Answers · Science & Mathematics · 17/06/2020

  5. Rate(He)/Rate(Cl₂) = √[MM(Cl₂)/MM(He)] = √(35.5×2/4.00) = 4.21 The answer: 4.21 (The third option)

    1 Answers · Science & Mathematics · 01/06/2020

  6. ... than electromagnetic repulsion. However, there is no such thing as helium 2 (as opposed to helium II, which does) because the nucleons...

    6 Answers · Science & Mathematics · 14/04/2020

  7. Your translation is adequate! potential energy becomes kinetic energy: q * potential = ½mv² 2*1.6e-19C * 1.2e6V = ½ * 6.64e-27kg * v² solves to v = 1.1e7 m/s which is < 4% of the speed of light, so we can ignore...

    1 Answers · Science & Mathematics · 08/02/2020

  8. It’s 3/2He ( helium -3). Explanation: The first number is ...of 4 protons on each side of the equation).  That makes it helium (atomic number = proton number = 2). Number of nucleons...

    1 Answers · Science & Mathematics · 31/05/2020

  9. ...ft will always vary. However if you approximate those pressures, assume helium is an ideal gas (cause at those pressures and temperatures...

    2 Answers · Science & Mathematics · 02/10/2020

  10. He is 4.002 g/mol 35 m³ = 35000 liters n = PV/RT = (600)(35000) / ( 8.314)(273.16+40) = 8066 mol 8066 mol x 4.002 g/mol = 32280 g or 32.3 kg Ideal gas law PV = nRT n = number of moles R = gas constant = 0.08206 (atm∙L)/(mol...

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

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