key2(2) - Questions on all three tests were the same, the...

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Questions on all three tests were the same, the order was rearranged. Please look over the key to find the question you are interested in. CHEM 1211A Test II Multiple Choice (3 points each, place answer on the bubble sheet in pencil) 1. What is a correct method for determining how many moles of calcium oxide are produced in the reaction of 10.0 g calcium with excess oxygen? 2 Ca(s) + O 2 (g) 2 CaO(s) a. 10.0 g Ca = b. 10.0 g Ca = c. 10.0 g Ca = d. 10.0 g Ca = e. 10.0 g Ca = 2. Iron reacts with hydrochloric acid to produce iron(II) chloride and hydrogen gas. Fe(s) + 2 HCl(aq) FeCl 2 (aq) + H 2 (g) How many moles of HCl will react with 4.6 moles of Fe? a. 2.3 mol b. 2.8 mol c. 4.6 mol d. 6.9 mol e. 9.2 mol 3. Which of the following compounds will be soluble in water: KNO 3 , Ca 3 (PO 4 ) 2 , CuCl 2 , and Fe 2 S 3 ? a. KNO 3 and Ca 3 (PO 4 ) 2 b. KNO 3 and CuCl 2 c. Ca 3 (PO 4 ) 2 and Fe 2 S 3 d. CuCl 2 and Fe 2 S 3 e. KNO 3 , Ca 3 (PO 4 ) 2 , and Fe 2 S 3 4. What is the net ionic equation for the reaction of aqueous sodium carbonate with aqueous iron(III) chloride? a. 3 Na + (aq) + Fe 3+ (aq) Na 3 Fe(s) b. Na + (aq) + Cl - (aq) NaCl(s) c. 3 Na 2 CO 3 (aq) + 2 FeCl 3 (aq) 6 NaCl(aq) + Fe 2 (CO 3 ) 3 (aq) d. 2 Fe 3+ (aq) + 3 CO 3 2- (aq) Fe 2 (CO 3 ) 3 (s) e. CO 3 2- (aq) + Cl - (aq) CO 2 (g) + Cl 2 O(s)
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5. Which of the following compounds is a weak acid? a. H 3 PO 4 b. HI c. HBr d. HClO 4 e. H 2 SO 4 6. Which one of the following compounds is a nonelectrolyte when dissolved in water? a. CH 3 CH 2 OH b. ZnBr 2 c. LiCl d. Ca(NO 3 ) 2 e. KOH 7. The heat of vaporization of benzene, C 6 H 6 , is 30.8 kJ/mol at its boiling point of 80.1 ° C. How much heat is required to vaporize 128 g benzene at its boiling point? a. 4.04 kJ
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This note was uploaded on 11/16/2011 for the course CHEM 1211k taught by Professor Wood during the Fall '07 term at Valdosta State University .

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key2(2) - Questions on all three tests were the same, the...

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