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Q: 7. Which of the following contain polar covalent bonds? a. ammonia, NH3 C. ozone, O3 b. chlorine,…
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- Which one of the following ions has the greatest lattice energy? A. KCI = KF = KBr = KI B. KCI C. KI D. KBr E. KFWhich of the following compounds would have the smallest enthalpy of formation? The bond energies are given in parentheses. a. HF (H-F = 567 kJ/mol) O b. H₂ (H-H = 436 kJ/mol) O C. HCI (H-CI = 431 kJ/mol) Od. HBr (H-Br = 366 kJ/mol) Oe. HI (H-I = 299 kJ/mol)Caffeine is a stimulant, and is the fuel that powers lots of early mornings and late night study sessions. The molecular formula of caffeince is CgH,,N402. The skeletal structure is shown below. Complete the Lewis structure for our good friend caffeine. Q H to [] H NS P Br CI More
- 7) Propane is a gas commonly used to fuel gas grills and camping stoves. The structure of propane is shown below. TABLE 8.4 Average Bond Enthalpies (k)/mol) Single Bonds H C-H N-H N-N N-O N-F 413 391 O-H 463 F-F 155 C-C C-N C-O O-O O-F O-CI 348 163 146 H. H. C-F 253 C-CI 242 293 201 190 358 272 203 :-F C-CI C-Br C-I 485 N-CI N-Br 200 234 H H H 328 243 Br-F 237 S-H S-F S-CI S-Br S-S Br-CI 218 Br-Br 193 276 339 327 253 218 266 Propane 240 259 H-H 436 567 431 366 299 C-S H-F H-CI H-Br H-I Si-H Si-Si 323 226 -CI I-Br 208 175 151 Si-C Si-O 301 368 Multiple Bonds C=C C=C 614 839 615 N=N NEN N-O 418 495 941 607 SO SS 523 418 891 799 1072 a) Write the balanced chemical equation for the combustion of propane. b) Draw out lewis dot structures to represent all molecules of all products and reactants in this reaction. The number of each molecule should be reflected in the balanced equation. c) Calculate the heat of combustion for propane using the bond enthalpies in the table. d) 1.00 mol of…Choose the correct ranking for the following bonds in terms of increasing bond length (from shortest to longest, shortest bond at left end, longest bond at right end). F-F, N-N, O-F, N-F, N-O (all bonds are single bonds) hyogn 1 hen 2 Не 1009 hum 3 400 bertn caton ogon noon 5 10 Li Be B N F Ne 6941 odum 11 14.007 phosphons 15 1599 90122 unteu 12 10 811 auninium 13 12011 sicon 14 20.190 argon 18 18.0 chiorine 17 16 Na Mg AI Si ci Ar 2290 polassium 19 24305 caldum munganese 25 262 30974 32 05 35453 399 krypon 36 scandm anium varodun chronium obail ikel 28 oopper 29 geman 32 arson bromine 20 21 22 23 24 26 27 30 31 33 34 35 к Са Sc Ti V V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 39.098 50942 55M5 nuthentun 44 63546 51.90 nolybdenum technetum 42 6539 cadniam 48 69723 ndun 4466 261 atnony 51 elurm 52 rutidum stonn oonm m hodn paladun Mlver odine non 37 38 39 40 41 43 45 46 47 49 50 53 54 Rb Sr Y Zr | Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Хе 760 bartum 100 91 num 77 10 platrum 78 10 87 85468…Which compound has the largest lattice energy? NaF b. Al2O3 c. MgO d. CaS e. CaO
- = O ELECTRONIC STRUCTURE AND CHEMICAL BONDING Counting bonding and nonbonding electron pairs in a Lewis... Below is the Lewis structure of the methoxide H H:C:O: H e (CH₂O) ion. Count the number of bonding pairs and the number of lone pairs around the carbon atom. bonding pairs: lone pairs: X Ś 1/5A east.cengagenow.com e: CHM 103 003 General Chemistry I C OWLV2 | Online teaching and learning resource from Cengage Learning 6:43 [References] Use the References to access important values if needed for this question. 1 pt Which one of the following bonds is the most polar? (electronegativities: C = 2.5, O = 3.5, Cl= 3.0, N = 3.0, H = 2.1) 1 pt 1 pt O H-CI 1 pt O C-H N-CI 1 pt OC-CI 1 pt O0-0 1 pt Submit Answer Try Another Version 5 item attempts remaining 1 pt 1 pt 1 pt Cengage Learning Cengage Technical Support+ 1 on CI- CI Q A Z @ 2 Click to edit molecule W S ●● command X Carbon tetrachloride, (CCI) is a solvent used in dry cleaning. Draw the Lewis structure of CCI and then determine the ideal bonding angle(s) for the CI-C-CI bond(s). www # 3 CJ Cl: . E D 8.0 F3 C $ 4 R JAN 25 A a FA FLO % 5 V T G Question 1 of 26 6 B FG Y H & 7 A) 90° B) 109.5° C) 120° D) 180° F7 לון U N 8 J DII FB I M ( 9 K F9 zoom O O H F10 L P command F11 { J F12 = ? option 1
- Draw the Lewis structure for the FCF molecule: both F atoms are bonded to the C atom. What is the bonding pattern and the shape around the C atom? Select one: A. There are two resonance structures: F–C=F and F=C–F. The shape around the C atom is bent. B. There are two resonance structures: F–C=F and F=C–F. The shape around the C atom is linear. C. Two single bonds: F–C–F. The shape around the C atom is bent. D. Two double bonds: F=C=F. The shape around the C atom is linear.Which of the following bonds has the longest bond length? IA HILA U Be 11 Na Mg 22 19 20 21 K Ca Sc Ti 37 Rb Sr 38 e Select one: O A. C-C Y 88 89 104 105 108 107 10 109 110 Fr Ra Ac Ung Unp Unh Uns Uno Une Unn OB. C-O O C. C-N 55 58 72 73 75 76 T 78 79 80 81 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl O D. C-F 40 41 42 Zr Nb Mo 13 14 15 16 17 18 Al Si P S CI Ar 34 35 23 24 25 20 27 28 29 30 31 32 33 38 V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 43 44 45 40 47 Tc Ru Rh Pd Ag Cd IIIA IVA VA VIA VIIA He 0 0 10 BCN O F Ne 5. VIILA 50 51 Sn Sb Te 53 54 1 Xe 82 83 84 85 80 Pb Bi Po At RnReferences] Consider the following reaction: H. H. CI CI CC (9) + CLg) H-C-C-H( AH-172 kJ H. H H Estimate the carbon-chlorine bond energy given that the C-0 bond energy is 347 /mol, the 0-C bond energy is 614 kJmol, and the Cl-O1 bond energy is 239 KJmol. Doa Umol
