W_06+-+practice+final+exam+1

W_06+-+practice+final+exam+1 - 1 Each of the following...

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Unformatted text preview: 1. Each of the following species contains two bonds EXCEPT a. O 2 b. HCCH c. CO 2 d. CN- e. N 2 2. Which of the following species is(are) planar? (i) CO 3 2- (ii) XeF 4 (iii) H 2 NNH 2 A) (i) only B) (i) and (ii) only C) (i) and (iii) only D) (ii) and (iii) only E) (i), (ii), and (iii) 3. In diatomic oxygen (O 2 ), the highest energy molecular orbital that is occupied by electrons is A) 2p B) 2p C) * 2p D) * 2p E) * 2s 4. Consider 0.1 M solutions of Ca(NO 3 ) 2 , Zn(NO 3 ) 2 , Al(NO 3 ) 3 , Arrange these in order of pH from lowest (most acidic) to highest (least acidic). A) Ca(NO 3 ) 2 < Zn(NO 3 ) 2 < Al(NO 3 ) 3 B) Al(NO 3 ) 3 < Zn(NO 3 ) 2 < Ca(NO 3 ) 2 C) Zn(NO 3 ) 2 < Ca(NO 3 ) 2 < Al(NO 3 ) 3 D) Al(NO 3 ) 3 < Ca(NO 3 ) 2 < Zn(NO 3 ) 2 E) All 3 solutions will be at pH 7, since NO 3 is not a base. 5. The best answer to report for is: A) 0.30000 B) 0.3000 C) 0.300 D) 0.30 E) 0.3 6. Which of the following is an example of a chemical change? A) iodine sublimating B) alcohol boiling C) sodium chloride melting D) silver tarnishing E) sucrose dissolving 7. Consider the unbalanced chemical reaction KHCO 3 ( s ) K 2 CO 3 ( s ) + CO 2 ( g ) + H 2 O( l ) How many moles of potassium carbonate will be produced if 2.00 moles of potassium hydrogen carbonate are heated? A) 0.250 B) 0.500 C) 1.00 D) 2.00 E) 4.0 8. What is the oxidation number of : (i) Cr in NaCrO 2 ; (ii) C in CaC 2 O 4 A) (i) +3 ; (ii) +2 B) (i) +4 ; (ii) +3 C) (i) +5 ; (ii) +4 D) (i) +2 ; (ii) +3 E) (i) +3 ; (ii) +3 (15.415 - 14.515) 3.465 + 0.0402597 9. Which of the following chemical reactions is an oxidation-reduction reaction? (i) Zn( s ) + S( s ) ZnS( s ) (ii) H 2 SO 4 + 2NaOH Na 2 SO 4 + 2H 2 O (iii) CH 4 + O 2 CO 2 + 2 H 2 O A) (i) only B) (ii) only C) (iii) only D) (i) and (iii) only E) (ii) and (ii) only 10. Which molecule has a permanent dipole moment? A) SiCl 4 B) S=C=O C) H 3 C-CH 3 D) SF 6 E) benzene (C 6 H 6 ) , 11. What is the partial pressure of nitrogen in a container that contains 2.0 mol of oxygen, 3.0 mol of nitrogen, and 1.0 mol of carbon dioxide when the total pressure is 900. torr?...
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W_06+-+practice+final+exam+1 - 1 Each of the following...

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