CHEM1300_MidtermF08_PartA

CHEM1300_MidtermF08_PartA - CHEM 1300 midterm, Fall 2008...

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CHEM 1300 midterm, Fall 2008 Page 1 of 8 Part A: Multiple Choice 1. The formulas of the hydroxide ion, the nitrate ion, and the phosphate ion are represented, respectively, as a) OH , NO 3 , PO 4 3– b) H , NO 2 , P 3– c) H , NO 3 , P 3– d) OH , NO 2 , PO 3 3– e) OH , NO 2 , PO 4 3– 2. Determine the concentration of a solution formed by dissolving 468 mg of MgI 2 in enough water to yield 50.0 mL of solution. a) 0.0297 M b) 0.0337 M c) 0.0936 M d) 0.0107 M e) 0.0651 M 3. Consider the following balanced reaction. Assuming the presence of an excess of C 3 H 7 SH, what mass of CO 2 can be formed from 288 mg of O 2 ? . 3 7 2 2 2 2 C H SH(1) 6 O (g) 3 CO (g) SO (g)+4 H O(g) + + a) 0.396 g b) 0.209 g c) 0.792 g d) 0.126 g e) 0.198 g 4. If a mercury thermometer breaks in the lab, what should you do? a) Throw the thermometer into the garbage bin b) Throw the thermometer into the broken glass bin c) Push the mercury down the drain d) Put the mercury into the garbage bag e) Notify the TA, Lab supervisor, or Lab Stewart immediately 5. The neutral atoms of all the isotopes of the same element have a) different numbers of protons. b) equal numbers of neutrons. . c) the same number of electrons. d) the same mass numbers. e) the same masses 6. Identify the missing particle in the following nuclear equation: ? C N 14 6 14 7 + a) alpha particle b) beta particle c) gamma ray d) positron particle e) megatron
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CHEM 1300 midterm, Fall 2008 Page 2 of 8 Part A: Multiple Choice 7. Write the nuclear equation for the alpha decay of 226 88 Ra . a) 226 4 230 88 2 90 Ra He Th + b) 226 1 225 88 0 88 Ra n + Ra c) 226 0 226 88 1 89 Ra e + Ac - d) 226 0 226 88 1 89 Ra + e Ac + e) 226 4 222 88 2 86 Ra He + Rn 8. Which of the following statements is (are) correct? a) Alpha particles are more massive than beta particles and thus have greater ionizing power but less penetrating power. b) Beta particles are high-energy electrons that can penetrate deeper into materials than alpha particles due to their smaller size. c) Gamma rays are a form of electromagnetic radiation that have low ionizing power but can penetrate most deeply through materials owning to their lack of mass. d) A positron is the antiparticle of an electron. e) All of the above are correct. 9. Arrange the following types of electromagnetic radiation in the order of increasing wavelength: UV, visible, X-ray, microwave a) X-ray < microwave < UV < visible b) X-ray < UV < visible < microwave c) microwave < visible < UV < X-ray d) visible < UV < X-ray < microwave e) visible < UV < microwave < X-ray 10. What is the wavelength of a photon having a frequency of 7.07 × 10
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This note was uploaded on 12/19/2011 for the course AP CHEM 1300 taught by Professor James during the Fall '11 term at Manitoba.

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CHEM1300_MidtermF08_PartA - CHEM 1300 midterm, Fall 2008...

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