General Chemistry - Final Exam 04

General Chemistry - Final Exam 04 - CHM 1300 and CHM 1310 B...

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CHM 1300 and CHM 1310 B DATE: December 20, 2004 Dr. Rashmi Venkateswaran 9:30 am TIME: 3 hours Page 1 of 20 STUDENT NAME: (Print) _________________________________________________ STUDENT NUMBER: ___________________________________________________ COURSE CODE: (Please circle) CHM 1300 CHM 1310B INSTRUCTIONS: 1. Write your answers on the exam. Please BOLD or HIGHLIGHT your final answer. 2. You are allowed to use electronic calculators during the exam (TI 30X, TI 34, TI 36). 3. Equations and constants are given on pages 18 and 19. A periodic table of the elements is included (page 20). 4. Use the correct number of significant figures at all times. 5. Marks allotted to each question are shown in brackets. 7. Use the back of sheets for rough work. Three extra (blank) pages (15, 16 and 17) have also been included. 8. You are advised to read through the exam paper before you begin to write. Answer first those questions that you can do right away, proceeding to more difficult questions thereafter. Allow about ten minutes near the end of the exam period to read quickly through your answers, checking for obvious errors. Quest. 1 2 3 4 5 6 7 8 9 10 Marks /10 /5 /20 /10 /13 /4 /8 /10 /10 /10 /100
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page 2 of 20 (10) 1. (a) The human eye can detect as little as 2.35 x 10 -18 J of green light of wavelength 510 nm. Calculate the minimum number of photons that can be detected by the human eye. (b) In a photoelectric effect experiment, light of energy 6.00 x 10 -19 J is absorbed by a metal, and the ejected electrons have a maximum kinetic energy of 2.70 x 10 -19 J. Calculate the following: i) the binding energy of the electrons in the metal ii) the wavelength of the light iii) the wavelength of the electrons
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page 4 of 20 (e) What mass of water could have its temperature raised by 5.0 ° C by a mole of photons that have a wavelength of 600 nm? (5) 2. What are the quantum numbers of the electrons that are lost by an atom of iron when it forms the ion Fe 2+ ? Why does it lose these particular electrons?
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page 5 of 20 (20) 3. A certain element X was found to form three compounds with chlorine having the formulae XCl 2 , XCl 4 , and XCl 6 . One of its oxides has the formula XO 3 , and X reacts with sodium to form the compound Na 2 X. (a) Is X a metal or a non metal? (b) In which group in the periodic table is X located? (c)
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This note was uploaded on 01/16/2011 for the course CHM 1300 taught by Professor Venkataswaren during the Fall '08 term at University of Ottawa.

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General Chemistry - Final Exam 04 - CHM 1300 and CHM 1310 B...

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