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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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- The photoelectric work function for a certain metal is 221.8 kJ/mol. If the metal absorbs a photon with a wavelength of 5.0 x 102 nm, and an electron is ejected, what is the kinetic energy of the ejected electron?
(A) 4.0 x 10–19 J
(B) 3.8 x 10–19 J
(C) 7.7 x 10–20 J
(D) 2.9 x 10–20 J
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- 6) (a) The solubility of carbon tetrachloride (CCI4) in water at 25°C is 1.2 g/L. The solubility of chloroform (CHCI3) at the same temperature is 10.1g/L. Why is chloroform almost 10 times more soluble in water than is carbon tetrachloride? (b) Explain the difference between the Bohr model for the hydrogen atom and the quantum-mechanical model. Is the Bohr model consistent with Heisenberg's uncertainty principle? (Ctrl)arrow_forwardApply the Pauli exclusion principle to determine the number of electrons that could occupy the quantum states described by the following. HINT (a) n = 4, ℓ = 1, mℓ = −1 electrons (b) n = 3, ℓ = 2 electrons (c) n = 4 electronsarrow_forwardWhat does the magnetic quantum number, ml, describe? (a) the orientation in space of the orbital (b) the average distance of the electron from the nucleus (c) the shape of the orbital (d) the direction of spin of the electronarrow_forward
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