W_06+-+practice+final+exam+2

W_06+-+practice+final+exam+2 - 1. Which of the following...

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1 1. Which of the following are true for the best Lewis structure of HSO 3 - ? i) 2 S=0 double bonds ii) 1 lone pair on sulfur iii) a formal charge of +1 on sulfur A) i only B) ii only C) iii only D) i and ii only E) ii and iii only 2. Which statement(s) is (are) correct? (i) Filtration is used to separate the components of a homogeneous mixture. (ii) mass spectroscopy is used to separate isotopes (iii) The oil-drop experiment measured the charge of the electron. A) i only B) ii only C) iii only D) i and ii only E) ii and iii only 3. Which hybridization(s) is (are) correct? i) I in IF 3 ii) As in AsH 3 iii) C in HCN sp 3 d 2 sp 3 d sp 1 A) i only B) i and ii only C) i and iii only D) ii and iii only E) iii only
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2 4. All the following oxoacids and names 1. H SO sulfurous acid 2. HClO chlorous acid 3. H CO carbonic acid 23 2 is (are) correct EXCEPT A)1 only B) 2 only C) All are correct D)3 only E) 1 and 2 only 5. Fluorotoluene contains 76.34% carbon, 6.41% hydrogen, and 17.25% fluorine. Each molecule of fluorotoluene contains one fluorine atom. The total number of carbon, hydrogen, and fluorine atoms in one molecule of fluorotoluene is A)14 B) 12 C) 15 D) 8 E) 13 6. Elemental sulfur can be converted to sulfur trioxide by reaction with oxygen in the presence of a catalyst. Upon addition of water, sulfuric acid is produced as represented by the equation: S 8 ( s ) + 12O 2 ( g ) + 8H 2 O(l) ⎯→ 8H 2 SO 4 ( l ) What minimum mass of sulfur is needed to prepare 175 g of H 2 SO 4 ? A) 39.6 g B) 71.8 g C) 81.9 g D) 75.3 g E) 57.2 g
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3 7. The oxidation state of nitrogen given for all the following species is correct EXCEPT A) N 2 H 4 ( 2) B) NH 3 ( 1) C) NH 2 OH ( 1) D) HNO 2 (+3) E) N 2 O (+1) 8. In the following oxidation-reduction reaction, 8H + ( aq ) + 6Cl - ( aq ) + Sn( s ) + 4NO 3 - ( aq ) ⎯→ SnCl 6 2- ( aq ) + 4NO 2 ( g ) + 4H 2 O the oxidizing agent is A) H + B) NO 3 - C) Cl - D) Sn. E) SnCl 6 2- 9. At standard conditions, 2.75 L of a gas weighed 5.39 g. The gas is A) N 2 O B) NF 3 C) F 2 D) N 2 E) NO
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4 10. In the picture: the volume of the gas collected is 520 mL; the mass of gas collected is 1.56 g; the temperature is 20°C. The manometer is open to the atmosphere, and P atm = 725 torr. h = 65 cm.
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This note was uploaded on 03/17/2010 for the course CHEM 130 taught by Professor Jadwigasipowska during the Spring '07 term at University of Michigan.

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W_06+-+practice+final+exam+2 - 1. Which of the following...

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