CHEM1300_MidtermF09_PartB

CHEM1300_MidtermF09_PartB - Write your final answer in this...

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CHEM 1300 Midterm Part B, Fall 2009 (DO ALL QUESTIONS ON FRONT AND BACK) Name: ________________________ Student Number: ________________________ 1 As Se c. Ne Na c. Am Pu b. He At a. 75 33 75 34 19 10 19 11 241 95 241 94 4 2 217 85 + + + + 1) If 8.52 g each of zinc, potassium dichromate, and sulfuric acid are reacted by the reaction: 4 Zn + K 2 Cr 2 O 7 + 7 H 2 SO 4 4 ZnSO 4 + 2 CrSO 4 +K 2 SO 4 + 7 H 2 O How many grams of potassium dichromate will be left unreacted? The molar masses of zinc, potassium dichromate, and sulfuric acid are respectively 65.41, 294.2 and 98.09 g/mol. Use the space below for your intermediate steps. 2) Fill in the missing particles in each of the following nuclear equations.
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Unformatted text preview: Write your final answer in this box CHEM 1300 Midterm Part B, Fall 2009 (DO ALL QUESTIONS ON FRONT AND BACK) Name: ________________________ Student Number: ________________________ 2 3) Complete the following orbital box diagrams for the following species. (See for example question 19 in Part A) a. Vanadanium, V 4s 3d b. Vanadanium IV cation, V 4+ 4s 3d 4) Draw the Lewis structure for the acetate ion, CH 3 CO 2 , including any important resonance structures. Label each atom with its formal charge....
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CHEM1300_MidtermF09_PartB - Write your final answer in this...

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