chm 2045 final key 07

# chm 2045 final key 07 - CHM 2045 Final Exam (Form Code A)...

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1 CHM 2045 Final Exam (Form Code A) December 8, 2007 Instructions: On your scantron sheet enter your name, UF ID number (start on the first space and leave the last space blank), Discussion Section No. and Form Code (see above). This exam consists of 30 multiple choice questions, each worth 11.0 points for a total maximum of 330 pts. Keep your exam sheet (mark your answers on it and the scantron sheet). Turn in only the scantron. Any bubbling error will count as an incorrect response . Possibly Useful Info: h = 6.626x10 -34 J·s; c = 3 x 10 8 m/s; R = 0.0821 L•atm/mol•K; R = 8.3145 J/ mol•K; N A = 6.02 x 10 23 ; specific heat capacity of water = 1.00 cal/g o C = 4.184 J/g o C; Rydberg constant = 1.0974 x 10 7 m -1 ; Rhc = 2.18 × 10 -18 J/atom 1. Which is the largest: Ar, K + , Cl - , S 2- , or Ca 2+ ? (1) Ar (2) K + (3) Cl - (4) S 2- (5) Ca 2+ 2. Which of the following molecules/ions has a central atom with a hybridization of sp 3 d 2 ? (1) SiF 4 (2) AsF 6 ¯ (3) BrF 3 (4) BF 4 ¯ (5) PF 5 3. A glass bulb weighs 30.00 g when evacuated, 130.00 g when filled with water at 25°C, and 30.036 g when filled with a certain gas at 25°C and 150.0 torr pressure. The density of water at 25°C is 0.996 g/cm 3 . What is the molecular mass of the gas? (1) 12.5 g/mol (2) 13.6 g/mol (3) 37.0 g/mol (4) 44.6 g/mol (5) 50.6 g/mol 4. Which substance has the highest boiling point? (1) CH 3 CH 2 CH 2 OH (2) CH 3 CH 2 CH 2 CH 2 OH (3) CH 3 CH 2 CH 2 CH 3 (4) CH 3 CH 2 CH 3 (5) CH 3 Cl 5. The data shown are for a reaction like: 2A + 2B Products. What is the missing rate (in M/s) for Experiment 1? Experiment [A] [B] Rate 1 0.50 0.15 2 1.50 0.15 1.3 x 10 -2 M/s 3 1.50 0.30 5.2 x 10 -2 M/s 4 0.25 0.30 8.6 x 10 -3 M/s (1) 1.4 x10 -1 (2) 8.6 x 10 -3 (3) 4.3 x 10 -3 (4) 6.5 x10 -3 (5) 2.6 x 10 -3 6. A 1.50 g sample of magnesium reacts with 342 mL of a 0.350 M solution of HCl to produce magnesium chloride and hydrogen gas. What mass of magnesium chloride is produced? (1) 5.71 g

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## This note was uploaded on 04/24/2008 for the course CHM 2045 taught by Professor Mitchell during the Spring '07 term at University of Florida.

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chm 2045 final key 07 - CHM 2045 Final Exam (Form Code A)...

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