Exam1_Fall2010_333333_KEY_updated

Exam1_Fall2010_333333_KEY_updated - North Carolina State...

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North Carolina State University Department of Chemistry CH 101 Exam1 September 13, 2010 CODE 333333 Name: ____________________________________________________ Answer all questions in this exam booklet. For the first 19 multiple-choice questions, fill the bubble corresponding to the letter choice that best com- pletes the statement or answers the question. ONLY the optical scan sheets will be graded for multiple-choice questions. Enter code 333333 in the SPECIAL CODES section. Print and fill in the bubble your LAST name onto the answer sheet Each multiple-choice question is worth 4 points. For the last three questions, you MUST show your work on the space provided for credit. Partial credit will be given provided that your logic is substantially correct and provided that your written solution is easy to fol- low. There is an attached sheet that contains the periodic table and required equations and constants. Feel free to detach this equation to use it for your calculations Bring all your material and your picture ID to Dr. Rabah/TA in the front of the room when you are done. “I have neither given nor received unauthorized aid on this test _______________________________” Student signature Grade: /100
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Student Name ________________________________ 2 1. Select the mass of 1 ATOM of sulfur A. 32.07 g C. 6.02 x 10 23 g B. 5.33 x 10 -23 g D. 32.07 x 10 23 g 2. 2 moles of Na 2 O contains ____ sodium atoms. A. 6.6 × 10 –24 D. 4 B. 4 x10 23 E. 6.02 × 10 23 C. 2.4 × 10 24 3. The reaction of elemental chlorine with potassium iodide, KI, yields elemental iodine and potassium chloride, KCl. Write a balanced chemical equation for this reaction. A. Cl
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Exam1_Fall2010_333333_KEY_updated - North Carolina State...

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