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CCF11302007_00001 - 8 The central atom in does not violate...

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Unformatted text preview: 8) The central atom in does not violate the octet rule. A) Ker B) 1C14‘ C) SF4 D) CF4 E) XeF4 fifi A valid Lewis structure of cannot be drawn without violating the octet rule. N3 <®BeH2 B) 302 C7‘5Q33‘ mg); 10) Bo enthalpy is @lways positive B) always zero C) sometimes positive, sometimes negative D) always negative E) unpredictable SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 11) From the information given below, calculate the heat of combustion of methane (CH4) (in kJ/mol). Start by writing the balanced equation. Bond D (kl/mol) V \ C—H 413 3* 0:0 495 \ "*3 C=O 799 463 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 12) Using the table of bond dissociation energies, the AH for the following reaction is k]. ZHCI (g) + F2 (g) -> 2HF (g) + C12 (g) Bond D (kI/ mol) H-Cl 431 F—F 155 H-F 567 Cl-Cl 242 f A) —359 B) 223 C) -223 D) 208 E) 359 ...
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