chem 1301 Final Exam

chem 1301 Final Exam - View Attempt 1 of 1 Title Started...

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View Attempt 1 of 1  Title: Final Exam Started: December 7, 2007 4:11 PM Submitted: December 7, 2007 5:54 PM Time spent: 01:43:15  Total score: 15/34 = 44.12%   Total score adjusted by 0.0  Maximum possible score: 34  1.      If 200.0 g of zinc sulfide contains 134.2 g of zinc, how many grams of zinc can be  obtained from 1.18 kg of zinc sulfide?      Student Response Correct  Answer a. 792 g Zn    b.  79.2 g Zn    c.  19.6 g Zn    d.  196 g Zn    e.  0.671 g Zn       Score: 1/1    2.   
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  Naturally occurring argon consists of three isotopes, the atoms of which occur in the  following abundances: 0.34%  36 Ar (35.9676 amu), 0.07%  38 Ar (37.9627 amu), and  99.59%  40 Ar (39.9624 amu). The calculated atomic weight of argon is:     Student Response Correct  Answer a. 39.95 amu    b.  37.96 amu    c.  38.96 amu    d.  39.64 amu    e.  none of the above       Score: 1/1    3.      207 Pb contains how many protons, electrons, and neutrons respectively?     Student Response Correct  Answer a.  82p, 82e, 207n    b.  207p, 207e, 82n    c.  125p, 125e, 82 n    d. 82p, 82e, 125n       Score: 1/1    4.   
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  The formula of calcium oxide is CaO. What is the formula of the ionic compound  containing calcium and permanganate ions?     Student Response Correct  Answer a.  CaMnO 4    b.  Ca 2 MnO 4    c. Ca 3 (MnO 4 ) 2    d.  Ca 2 (MnO 4 ) 3    e.  none of these       Score: 0/1    5.      Write names for the formulas, or formulas for the names, of the following compounds: a) N 2 O 3 ; b) sulfur hexafluoride; c) ICl 3 .     Student Response Correct  Answer a. Dinitrogen trioxide SF 6  Iodine trichloride    b.  nitrogen trioxide SF 6  Iodine trichloride    c.  Dinitrogen trioxide S 6 F Iodine trichloride    d.  Trinitrogen dioxide SF 6  Iodine trichloride    e.  Dinitrogen trioxide SF 6  Chlorine triiodide       Score: 1/1    6.   
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  A 1.567 g sample of a titanium chloride was decomposed to pure titanium which had a  mass of 0.487 g. Its empirical formula is      Student Response Correct  Answer a.  TiCl    b.  TiCl 2    c. TiCl 3    d.  TiCl 4    e.  Ti 2 Cl 3       Score: 1/1    7.   
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  What will be the theoretcal yield of tungsten(s) ,W, if 45.0 g of WO 3  combines as  completely as possible with 1.50 g of H 2 ? WO
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This note was uploaded on 04/07/2008 for the course COMM 1001 taught by Professor Burner during the Fall '08 term at University of Houston.

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chem 1301 Final Exam - View Attempt 1 of 1 Title Started...

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