test2 - Chemistry 211 Fall 2010 Test 2 Name: _ Please Print...

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Chemistry 211 Name: ____________________ Fall 2010 Please Print Test 2 Multiple Choice: (4 points each. Put answers in left margin as capital letters.) 1. How many significant figures are in the answer to the following problem: (233 + 827) x 1132? a) 1 b) 2 c) 3 d) 4 e) 5 2. Which of the following would be a weak electrolyte in aqueous solution? a) H 3 PO 4 b) KOH c) N 2 d) NaCl e) Ni(OH) 2 3. What is the concentration of a solution of 4.12 g CaCl 2 in 275 mL of solution? [see discussion question 3] a) 0.0102 M b) 0.135 M c) 0.198 M d) 0.212 M e) 0.360 M 4. What is the oxidation number of each chromium atom in Na 2 Cr 2 O 7 ? a) 0 b) +3 c) +6 d) +9 e) +12 5. Which of the following is false? a) The liquid present in largest quantity in a solution is the solvent. b) Substances that gain electrons are oxidized. c) Electrolytes are substances that form ions when dissolved in water. d) Weak electrolytes are substances that do not completely ionize in water. e)
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test2 - Chemistry 211 Fall 2010 Test 2 Name: _ Please Print...

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