hw2 - Hou, Taylor Homework 2 Due: Sep 19 2007, 11:00 pm...

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Unformatted text preview: Hou, Taylor Homework 2 Due: Sep 19 2007, 11:00 pm Inst: Brodbelt 1 This print-out should have 12 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. Brodbelt CH301 Due Sept. 19, 2007, 11:00 pm Chapter 12 material, Part I 001 (part 1 of 1) 10 points How many moles of electrons would there be in one mole of He 2+ ? 1. 4 mol 2. 2 mol 3. 1 mol 4. 0.5 mol 5. none 002 (part 1 of 1) 10 points The atomic weight of a newly discovered el- ement is 10.600 amu. It has two naturally occuring isotopes. One has a mass of 10.000 and a natural abundance of 70.000%. What is the isotopic mass of the other isotope? 1. 11.200 2. 11.000 3. 9.5000 4. 11.500 5. 10.500 6. 10.000 7. 9.0000 8. 10.600 9. 12.000 003 (part 1 of 1) 10 points How many protons and electrons are present in the Mg 2+ ion? 1. 14 protons, 12 electrons 2. 10 protons, 12 electrons 3. 12 protons, 12 electrons 4. 14 protons, 10 electrons 5. 12 protons, 10 electrons...
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This homework help was uploaded on 04/16/2008 for the course CH 301 taught by Professor Fakhreddine/lyon during the Spring '07 term at University of Texas at Austin.

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hw2 - Hou, Taylor Homework 2 Due: Sep 19 2007, 11:00 pm...

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