HW2 _200 PM_Answers

HW2 _200 PM_Answers - E. Se 5. Which of the following ions...

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General Chemistry 1035 2:00 PM (T, Th) Homework 2 This homework is due on September 10 in class. Make sure you pick up a blank opscan in class. Make sure you have bubbled the correct student number. Failure to do so will result in an automatic zero for this homework. 1. The number of neutrons in 4 molecules of S 8 , where S has the mass number of 34, is a) 72 b) 136 c) 576 d) 360 2. Bromine is the only nonmetal that is a liquid at room temperature. Consider the isotope bromine-81. Select the combination which lists the correct atomic number, neutron number, and mass number, respectively. A. 35, 46, 81 B. 35, 81, 46 C. 81, 46, 35 D. 46, 81, 35 E. 35, 81, 116 3. Which of the following is a metal? A. nitrogen, Z = 7 B. phosphorus, Z = 15 C. arsenic, Z = 33 D. thallium, Z = 81 E. silicon, Z = 14
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4. What is the chemical symbol for the group 16 element that lies in period 4? A. Cr B. Hf C. W D. Ti
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Unformatted text preview: E. Se 5. Which of the following ions occurs commonly? A. N 3+ B. S 6+ C. S 2-D. Ca + E. Cl + 6. What characteristics is shared by the following atoms? 1. Tellurium-122 2. Xenon-124 3. Antimony-121 a) same number of neutrons b) same number of protons c) same number of nucleons d) same number of electrons 7. Which ion does not have a -1 charge? a) Dihydrogen phosphate b) Carbonate c) Chlorite d) Hydrogen sulfate e) Hypochlorite 8. Which of the following compounds cannot exist? a) K 2 SO 4 b) Ba(ClO 4 ) 2 c) MgCO 3 d) Na 2 NO 3 9. Diiodine pentaoxide is used as an oxidizing agent that converts carbon monoxide to carbon dioxide. What is its chemical formula? A. I 2 O 5 B. IO 5 C. 2IO 5 D. I 5 O 2 E. (IO 5 ) 2 10. What is the name of the acid formed when HBr gas is dissolved in water? A. bromic acid B. bromous acid C. hydrobromic acid D. hydrobromous acid E. hydrobromidic acid...
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This note was uploaded on 01/21/2010 for the course CHEM 1035 taught by Professor Jgdillard during the Fall '07 term at Virginia Tech.

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HW2 _200 PM_Answers - E. Se 5. Which of the following ions...

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