prac exam 2 - Circle the best answer. Show work where...

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Circle the best answer. Show work where appropriate. Questions 6 pts each. 1. Which equation is the net ionic equation for the reaction in water of BaCl 2 and Na 2 SO 4 . 1. BaCl 2 (aq) + Na 2 SO 4 (aq) BaSO 4 (s) + 2NaCl(aq) 2. BaCl 2 (s) Ba 2+ (aq) + 2Cl - (aq) 3. Ba 2+ (aq) + SO 4 2- (aq) BaSO 4 (s) 4. Na + (aq) + Cl - (aq) NaCl(s) 5. none of these 2. What mass of KOH is needed to prepare 0.50 L of a 0.100 molar solution? 1. 0.22 g 2. 4.3 g 3. 1.1 g 4. 2.8 g 5. none of these 3. What is the molarity of a solution of HCl that is prepared by the dilution of 10 mL of 2.00 molar HCl to 1.00L? 1. 0.500 molar 2. 0.0350 molar 3. 0.0200 molar 4. 0.100 molar 5. none of these 4. How many mL of a 0.114 molar Ca(OH) 2 solution is needed to react with 20.0 mL of a 3.55 molar HNO 3 solution? 1. 623 mL 2. 412 mL 3. 1.24 x 10 3 mL 4. 311 mL 5. none of these
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5. Use the information in the equation below to calculate the H for the endothermic reaction that converts 6.00 g of H 2 O(l) into H
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This note was uploaded on 06/02/2011 for the course CHEM 111 taught by Professor Dukes during the Fall '08 term at South Carolina.

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prac exam 2 - Circle the best answer. Show work where...

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