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![Draw the Lewis structure for the phosphorus tribromide (PBr3)
molecule.
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- Covalent bonds: H―HC―HO―HO═O C≡O Bond energy (kJ/mol):4364154654981080Calculate the enthalpy change (H, in kJ/mol) for the following reaction and indicate whether the reaction is exothermic or endothermic.(*BE for C═Oin CO2)(a) CH4(g)+ H2O(g)CO(g)+ 3H2(g);Draw the Lewis structure of CH3CH = C(CH3)2, a neutral compound.Consider the Lewis Structure for the molecule, [BrCl4]. On your own, make a sketch of the VSEPR shape, and use that to answer the following questions: :Cl: :Cl,Br- -Br÷Cl:
- Using the bond energies provided, calculate the enthalpy of the reaction (∆Hrxn, in kJ) for the combustion of methanol shown below. CH3OH(l) +3/2 O2 (g) → CO2 (g) + 2 H2O(g)Many free radicals combine to form molecules that do not contain any unpaired electrons. The driving force for the radical- radical combination reaction is the formation of a new electron-pair bond. Consider the formation of hydrogen peroxide. 2 OH(g) → H₂O₂(g) Write Lewis formulas for the reactant and product species in the chemical equation. Include nonbonding electrons. OH(g) Select Draw Rings More / ||| ||| Erase Q2 Q H₂O₂(g) Select Draw Rings More 3 S H Erase Q2 Q Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemistry Publisher: University Science BRank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance chemical symbol, chemical formula or Lewis structure boiling point do HIC-H || (Choose one) A HIC H B H₂ (Choose one) :0: || (Choose one) ✓ HIC H Co (Choose one) S ? C D X
- For each of the following covalent bonds: (a) use the symbols δ+ and δ- to indicate the direction of polarity (if any).(a) C-F; (b) N-Br; (c) B-C; (d) Si-H(b) Rank the following covalent bonds in order of increasing polarity. (i) C-H, O-H, N-H; (ii) C-N, C-O, B-O; (iii) C-P, C-S, C-NCalculate the Enthalpy Change (ΔH) from average bond energies, which have been listed below in KJ/mol, for the following reaction and identify the nature of the reaction: CH3COOH + CH3OH → CH3COOCH3 + H2O [C‒H: 413; C‒C: 347; C=O: 745; C=C: 614; Cl‒Cl: 239, C‒O: 358; O‒H: 467]Draw the Lewis structure for the carbon dioxide (CO₂) molecule. Ċ C B X C [ ]¯ Ś
- Draw the Lewis structure for the chlorine trifluoride (CIF3) molecule. Ċ C C X S 1 [] ?Write a brief paragraph describing the molecule octane (C8H18) and the important function that it serves.Given the bond enthalpies C=O (707), O=O (498), H—O (464), and C—H (414) in kJ/mol, compute Δ H° in kJ/mol for: CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g) +259 -618 -259 -519 +618
