1331 2000 test 1
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1331 2000 test 1

Course Number: CHEM 1331 1331, Fall 2012

College/University: U. Houston

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CHEM 1331 EXAM 1 FALL 2000 1. Balance the following redox equation in acidic solution using the smallest integers possible and select the correct coefficient for the hydrogen sulfite ion, HSO3-. MnO4-(aq) + HSO3-(aq) Mn2+(aq) + SO42-(aq) (A) 5 (B) 2. How many milliliters of 1.58 M HCl are needed to react completely with 46.4 g NaHCO3 [molar mass = 84.02 g/mol] (A) 1144 mL 3. Choose the correct category...

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CHEM 1331 EXAM 1 FALL 2000 1. Balance the following redox equation in acidic solution using the smallest integers possible and select the correct coefficient for the hydrogen sulfite ion, HSO 3- . MnO 4- (aq) + HSO 3- (aq) Mn 2+ (aq) + SO 4 2- (aq) (A) 5 (B) 1 (C) 2 (D) 10 (E) 6 2. How many milliliters of 1.58 M HCl are needed to react completely with 46.4 g NaHCO 3 [molar mass = 84.02 g/mol] (A) 1144 mL (B) 1072 mL (C) 1276 mL (D) 46.4 mL (E) 350 mL 3. Choose the correct category for the reaction below and state whether it is a redox reaction or not. Ca(s) + 2 H 2 O(l) Ca(OH) 2 (aq) + H 2 (g) (A) combination reaction but not a redox reaction (B) combination reaction and a redox reaction (C) decomposition reaction and a redox reaction (D) displacement reaction and a redox reaction (E) displacement reaction but not a redox reaction 4. The symbol and atomic number of the halogen in period 4 are: (A) Se, 78.96 (B) Se, 34 (C) Br, 35 (D) I, 53 (E) Sb, 51 5. Identify the reducing reagent in the following redox reaction, Hg

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U. Houston - CHEM 1331 - 1331
1331 Fall 2001 Exam 1 Version 11. A hypothetical element Q has two isotopes with the masses and abundances shownbelow. If Q appeared in the periodic table, what would be its atomic mass?Q isotope 131.163 amu35.160%Q isotope 234.296 amu64.840%A. 3
U. Houston - CHEM 1331 - 1331
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U. Houston - CHEM 1331 - 1331
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CHEM 1331 Test 2 Fall 2003 1. For the complete combustion of 1.000 mole of methane gas at 25 C and 1.00 atm, H = -890.4 kJ. If the reaction is carried out in a strong, sealed vessel, like that in a bomb calorimeter, w = A. 48.9 L atm B. 4.96 kJ C. both 48
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U. Houston - CHEM 1331 - 1331
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U. Houston - CHEM 1332 - 1332
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