1. What is the wavelength of the spectral line showing the transition of an electron from n = 5 energy level to n = 2 energy level in hydrogen atom? (c = 3x108m / s)
1. What is the wavelength of the spectral line showing the transition of an electron from n = 5 energy level to n = 2 energy level in hydrogen atom? (c = 3x108m / s)
3. At 25 oC and 0.5 atm, the density of N2 (g) is 0.572 g / liter and the effusion rate is 9.5 mL / s. a) Find the density of a gas effecting at 6.28 mL / s under these conditions. (N: 14g / mol) b) Find the molecular weight of this gas.
8. The half-life of 3576 Br is 16.5 hours. How much of the 0.01 gram sample of 3576Br remains intact after 1 day? (R = 0,082 L.atm / mol.K = 8,314 j / mol.K = 1,987 cal / mol.K)
6. Ag (s) / AgCl (s) / Cl-1 (aq) / Hg2Cl2 (k) / Hg (s), Pt (k) standard battery is 0 = 0.0454 V and the battery reaction is 2Ag (k) Hg2Cl2 (s) 2Hg (s) + 2AgCl (k). Since the standard formation enthalpy of AgCl (k) is -127 kj / mol and the standard formation enthalpy of Hg2Cl2 (k) is -264.9kj / mol, find the H, ΔG, ΔS values of the cell reaction at 25oC and will this battery work? Describe (F: 96500 culon).
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