quiz3_key_jjl052

quiz3_key_jjl052 - Name (Last, First): Quiz 3 UCSD P/D:...

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Unformatted text preview: Name (Last, First): Quiz 3 UCSD P/D: |A|_|_|__|_|_|_|_l_| Chemistry 6A Fa/l2008 Signature: FormW E Cb Total Points: /20 You have 15 minutes to complete this quiz. Please show all your work, but write the answers in the designated spaces. The points allotted for each question are indicated in parenthesis. Potentially Helpful Constants: Potentially Helpful Equations: Mass of electron, me = 9.109 38 x 10‘31 kg EK = 1/2mv2 Mass of proton, mp = 1.672 62 x 10‘27 kg EK = hv - d5 Mass of neutron, mn = 1.674 93 x 10’27 kg qlq2 (ZIeXzze) e=1.60218x10‘19C Ep =—*=—_ 47w: r 47m r g = 9.806 65 mos‘2 0 0 1,2 E = h c = 2.997 92 x 108 mos'l. p mg R = 3.289 84 x 1015 Hz c = wt h = 6.626 08 x 10341-5 E = hv lpamcle : h/(mv) Potentially Helpful Conversion Factors: V _ R i _i 1] = 1 N-m _ "12 "22 1 N = 1 k m s‘2 1 L = losgcma AxAp 3 1/21’2 1 eV = 1.602 18 x 10491 1. Write the chemical formula or IUPAC name of the following molecules and indicate the predominant bonding (ionic, covalent): I (5 points) IUPAC name chemical formula bonding type fi/I w / C ,u .g (a) ammonium nitrate . ‘V Z ’(‘V H > . [w ”& “atrium (w) i . 63¢ PtCI4 L (b) (c) 2-propanol CH3CH20HCH3 ( J’VJJH/ 2. in each of the following sets, arrange in order of weakest to strongest ionic bond strength based on Coulombic forces: (2 points) (a) C30, SrO, BaO (b) NaCl, MgO, KBr Name (Last, First): Quiz 3 UCSD PID: |A|_|_|_|_|__(_|_l_| Chemistry 6A Fall 2008 Signature: FormoE67" E0439 3. Jerry tells you in section that nitrogen has a higher ionization energy than oxygen. Is he correct? Explain why he is or isn't (short answers pleasel). (2 points) jé'r). h At 'l I 4L3 if (/uxrcb/ :Ux‘ 7e 4. .Name the following acids: (4 points) (3) H2504: 17“ {wa l (b) HClOZ: LN WW“ 5 (c) HF: [/1 Jr 1 (“0" lb (d) Hzcog: L 1"" (7* “‘ ’ L ' 5. Jerry finds a chemical with the following mass ratio: 62.1% carbon, 10.3% hydrogen, and 27.6% ’ oxygen. it has a molecular mass of 58. (7 points) (a) What is the molecular formula of this molecule? (3 points) (91. may ’56 /n= 3 Mum 10.?329 “’5 ‘- 9/1 c e hydroc‘okflj 14-6 07o —"> ; l9/"? ” ' “'3‘” (b) Jerry tells you that the molecule in part (a) has a C-C double bond. Provide the Lewis structure of this molecule (clearly indicate lone pairs!): (4 points) If you don't get part (a), draw a Lewis structure of 5032‘. (3 points) 9 II [P ’L ' a O ‘ @ H ‘ (9 “I”? l, \l u " Name (Last, First): ’46 , Quiz 3 UCSD PID: |A|_-| _ | _|_|_ | _ | _|_| Chemistry 6A Fall 2008 Signature: Form E07 Total Points: /20 You have 15 minutes to complete this quiz. Please show all your work, but write the answers in the designated spaces. The points allotted for each question are indicated in parenthesis. Potentially Helpful Constants: Potentially Helpful Equations: Mass of electron, me = 9.109 38 x 10'31 kg EK = 1/2mv2 Mass of proton, mp = 1.672 62 x 10'27 kg ' EK = hv - (15 Mass of neutron, mn = 1.674 93 x 10'27 kg qqu (zlexzze) e = 1.602 18 x 10'19 c Ep _ — _— _ 47:8 r 47:5 r g = 9.806 65 mos‘2 0 0 1,2 E = m h c = 2.997 92 x 108 mos‘1 p g R = 3.289 84 x 1015 Hz 6 = wt h = 6.626 08 x 10'34 m E = hv lparticle = h/(mv) Potentially Helpful Conversion Factors: V _ R i _i 1J=1Nom » — ml, "22 1 N = 1 k m s'2 1 L = 103gcm3 Amp 2 W1 1 eV = 1.602 18 x 10491 1. Write the chemical formula or IUPAC name of the following molecules and indicate the predominant bonding (ionic, covalent): (5 points) IUPAC name chemical formula bonding type (a) cesium fluoride CsF 4'5"“— (b) ammonium perchlorate rid/{‘17 L l \ h L (c) 7w" l ( “\l l: [/tltk’ w) L FeC|3 / ” L 2. In each of the following sets, arrange in order of weakest to strongest ionic bond strength based on Coulombic forces: (2 points) (a) CaO, SrO, 330 (b) NaCl, MgO, KBr hu‘ L“er Lad KR, \J, 1;: M, o Name (Last, First): Quiz 3 ucso PID." |A|_|_|_|_|_|_|_|_| Chemistry 6A Pal/2008 Signature: Form E07 3. Jerry tells you in section that nitrogen has a higher ionization energy than oxygen. Is he correct? Explain why he is or isn't (short answers please!). (2 points) Ye;- u m Mia-Mm sun, a'tfiftttii TI": rLt‘MNe/ O’- 4. Name the following acids: (4 points) (a) H2503: "1M5 (b) HC|043 f Lullth lg (c) HI: Mm: ml in (d) CH3COOH: Cu .tp; .k 5. Jerry finds a chemical with the following mass ratio: 62.1% carbon, 10.3% hydrogen, and 27.6% oxygen. It has a molecular mass of 58. (7 points) (a) What is the molecular formula of this molecule? (3 points) YQ‘Z: (filo/[$3 3 carbons l0.3’79 --——° = T b (garage/is Lq—.£"7n M516/[b " ( ofiygm I,“ I L; (b) The molecule in part (a) forms a four-membered ring. Provide the Lewis structure of this molecule (clearly indicate lone pairs!): (4 points) If you don't get part (a), draw a Lewis structure of CIOZ‘: (3 points) 549*61 LO -4: lg, -|1,a q. -4; 0 ., Name (Last, First): Quiz 3 UCSD PID: |A|_|_|_|_|_|_|_|_| Chemistry 6A Fol/2008 Signature: Form E08 Total Points: /20 You have 15 minutes to complete this quiz. Please show all your work, but write the answers in the designated spaces. The points allotted for each question are indicated in parenthesis. Potentially Helpful Constants: Potentially Helpful Equations: Mass of electron, me = 9.109 38 x 10'31 kg EK = 1/2n1v2 Mass of proton, mp = 1.672 62 x 10'27 kg EK = hv - CD Mass of neutron, m, = 1.674 93 x 10'27 kg E qch2 (ZleXz7e) _ ~19 : : _—“ e - 1.602 18 X 10 C P 477.80,, 472.80,,L2 g = 9.806 65 mos'2 c = 2.997 92 x 108 mos'1 R = 3.289 84 x 1015 Hz c = v1 Epzmgh h = 6.626 08 x 10341-5 E = W Apai‘m‘le : (Viv) Potentially Helpful Conversion Factors: 1 1 V = R — — — 1] = 1 NOm n2 n2 1 N = 1 kg m s‘2 l 2 3 3 AxAp 3 1/2h 1 L = 10 cm 1 eV = 1.602 18 x 10491 1. Write the chemical formula or IUPAC name of the following molecules and indicate the predominant bonding (ionic, covalent): (5 points) IUPAC name chemical formula bonding type , ‘ A ‘ (a) Chiorldc" PbCIZ LOA LL (b) ammonium sulfate ( 5:); 10/“. (— (c) 1-bromoethane CH3CHZBr Cwm l Lfl :‘ 2. In each of the following sets, arrange in order of weakest to strongest ionic bond strength based on Coulombic forces: (2 points) (a) CaO, SrO, BaO (b) NaCI, MgO, KBr %a\0 Sro K‘Er 'NOLC,\ N20 Name (Last, First): Quiz 3 UCSD PID: |A|_|_|_|_|_|_|_|_| Chemistry 6A Fall2008 Signature: Form E08 3. Jerry tells you in section that nitrogen has a higher ionization energy than oxygen. Is he correct? Explain why he is or isn't (short answers please!). (2 points) it». N Ms WREM sitar madam f9 (LffiOVQ/ z,’ . 4. Name the following acids: (4 points) (a) HN03: “home “all (b) HC|03: (ll/“05% N)“; (c) HBr: (d) H3PO4: 5. Jerry finds a chemical with the following mass ratio: 62.1% carbon, 10.3% hydrogen, and 27.6% oxygen. It has a molecular mass of 58. (7 points) (a) What is the molecular formula of this molecule? (3 points) 52467“ 5%: ae/n: 3 We» [0.3070 _——p b/l ; é lnjd/bfitnj 719% —a«> lip/is Ll wng EM. 0 (b) The molecule in part (a) forms a three-membered ring with one functional group. Provide the Lewis structure of this molecule (clearly indicate lone pairs!): (4 points) If you don't get part (a), draw a Lewis structure of C0323 (3 points) :0: E? (L C Meme» Z= Ur w: 'l‘K-Iszo ...
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quiz3_key_jjl052 - Name (Last, First): Quiz 3 UCSD P/D:...

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