!1!Chapter(2(1.!Antimony,!Sb,!has!two!stable!isotopes.!Given!that!43.8%!of!natural!antimony!is!123Sb!with!the!experimentally!determined!mass!122.904!amu,!what!is!the!other!stable!isotope?!!!! A)!120Sb!! B)!121Sb!! C)!122Sb!! D)!123Sb!! E)!124Sb!!!2.!!What!is!the!chemical!formula!for!the!compound!containing!the!iron(III)!cation!and!the!sulfate!anion?!!! A)!Fe3SO4!! B)!FeS!! C)!Fe3(SO4)2!! D)!Fe2(SO4)3!! E)!Fe2S3!!!3.!!Which!chemical!species!is!incorrectly!named?!!! A)!CaBr2! ! calcium!bromide!! B)!TiCl2! ! titanium(II)!chloride!! C)!(NH4)2CO3! ! ammonium!carbonate!! D)!PF5!! ! phosphorus!pentafluoride!! E)!CO32U! ! carbon!trioxide!!!4.!!A!given!isotope!contains!92!protons,!146!neutrons,!and!86!electrons.!!What!is!the!chemical!symbol!for!this!isotope?!!! A)!€ 92238U6+!! B)!€ 92146U!! C)!€ 86178Rn!! D)!€ 86238Rn6+!! E)!€ 146U6+!!!!!!!2!!5.!Which!symbol!represents!the!alkaline!earth!metal!with!the!greatest!atomic!number?!!! A)!Fr!! B)!Ra!! C)!Sr!! D)!Tl!! E)!Rn!!!6.!!Which!symbol!represents!a!period!five!transition!metal!that!has!40!electrons!when!it!forms!a!2+!cation?!!! A)!Mo!! B)!Zr!! C)!V!! D)!Cr!! E)!Ru!!!7.!!Which!of!theses!is!an!isotope!of!12C?!!!!! A)!12N!! B)!12C2+!! C)!6B!! D)!13C!! E)!11B!!!8.!How!many!neutrons!are!present!in!one!atom!of!32P?!!! A)!15!! B)!17!! C)!32!! D)!5!! E)!3!!!9.!!Which!formula!represents!copper(II)!nitrate?!!! A)!Co3N2!! B)!Cu3N2!! C)!CuNO3!! D)!Cu(NO3)2!! E)!CoNO3!!3!!!10.!Which!image!best!represents!the!perchlorate!ion?!!A)! ! ! B)! !!C)! ! ! D)! !!!E)! !!!!!!!!!!!!!!!!!4!11.!!Which!symbol!best!represents!the!isotope!of!selenium!that!contains!34!protons,!36!neutrons,!and!36!electrons?!!ANS:!!E!!! !!!12.!!The!only!two!significant!isotopes!of!group!3A!element!gallium!are!69Ga!(68.9256amu)!and!71Ga!(70.9247!amu).!!What!are!the!natural!abundances!of!the!two!isotopes?!!! !69Ga! ! !71Ga!! A)!! 39.89%! ! 60.11%!! B)!! 69.93%! ! 30.07%!! C)!! 60.11%! ! 39.89%!! D)! 30.07%! ! 69.93%!! E)!! 31.00%! ! 69.00%!!!13.!!!What!is!the!formula!of!the!organic!molecule!below?!!!!! A)!C3H6O3!! B)!C3H2O3!! C)!CH2O!! D)!C3H3O6!! E)!CHO2!!!!!5!14.!!Which!isotope!has!the!most!neutrons?!! A)! !!! B)! !! C)! !! D)! !! E)! !!!!15.!!Which!statement!is!true!?! !! A)!All!atoms!of!the!same!element!have!the!same!number!of!neutrons.!! B)!An!atom!that!has!more!electrons!than!protons!has!a!positive!charge.!!! C)!A!neutral!atom!has!the!same!number!of!protons!and!neutrons.!! D)!An!atom!that!has!more!electrons!than!protons!has!a!negative!charge.!! E)!Atoms!with!negative!charges!are!called!cations.!!!!16.!!An!element!has!two!naturally!occurring!isotopes.!!Isotope!1!has!a!mass!of!129.9038!amu!and!a!relative!abundance!of!57.4%.!!Isotope!2!has!a!mass!of!122.9042!amu.!!What!is!the!atomic!weight!of!the!element?!!! A)!126.4!! B)!126.9!! C)!129.9!! D)!122.9!! E)!There!is!not!enough!information!to!answer!this!question.!!!!17.!!What!is!the!name!of!Na2CO3?!!! A)!sodium!!calcium!oxides!! B)!sodium!carbonate!! C)!disodium!carbonate!! D)!disodium!carbon!trioxide!!! E)!sodium(II)!carbonate!!!6!18.!Which!of!the!following!best!characterizes!a!covalent!bond?!!! A)!sharing!electrons!between!atoms!! B)!exchange!of!electrons;!cations!and!anions!are!present!! C)!a!sea!of!electrons!! D)!a!!lattice!! E)!conduction!of!electricity!((Chapter(3(1.!!How!many!moles!of!hydrogen!atoms!are!present!in!two!moles!of!water?!! !! A)!1!! B)!2!! C)!3!! D)!4!! E)!5!!!2.!!A!laboratory!analysis!of!an!unknown!solid!determined!the!following!mass!percent!composition:!! Ca!=!54.09%!! H!=!2.72%!! O!=!43.19%!!What!is!the!empirical!formula!for!the!solid?!!! A)!Ca(OH)2!! B)!Ca27O22H!! C)!CaOH!! D)!Ca0.337O0.675H0.668!! E)!Ca4(OH)8!!!3.!!What!is!the!percent!mass!of!Cl!in!TiCl4?!!! A)!25.2%!! B)!74.8%!! C)!42.5%!! D)!57.5%!! E)!20.0%!!!!!!!7!4.!!What!are!the!coefficients!represented!by!C!and!D,!respectively,!in!the!balanced!chemical!reaction:!!!___!SrO(s)!!+!___Al(s)!!!!__Sr(s)!+!___Al2O3(s)!! ! !!!!!!!!!A!!!!!!!!!!!!!!!!!!!!B!!!!!!!!!!!!!!!!!!!!C! !!!!!!!!!!!D!!! A)!3!and!1!! B)!3!and!3!! C)!2!and!3!! D)!3!and!0!! E)!!1!and!3!!!5.!!How!many!atoms!of!nitrogen!are!in!20.85!g!Ba(NO3)2!?!!The!molar!mass!of!Ba(NO3)2!is!261.337!g/mol.!!! A)!8.84!x!1024!atoms!! B)!4.80!x!1022!atoms!! C)!9.61!x!1022!atoms!! D)!1.92!x!1023!atoms!! E)!8.13!x!1026!atoms!!!6.!!What!is!the!solid!produced!when!K3PO4!reacts!with!Ca(NO3)2?!!! A)!KNO3!! B)!Ca3(PO4)2!! C)!Ca2+!! D)!NO3U!! E)!K!!!7.!!What!is!the!net!ionic!equation!for!the!following!chemical!reaction?!!Na2CO3(aq)!!+!!Ca(NO3)2(aq)!!!!CaCO3(s)!!+!!NaNO3(aq)!!! A)!Na2CO3(aq)!!+!!Ca(NO3)2(aq)!!!!CaCO3(s)!!+!!NaNO3(aq)!! B)!2Na+(aq)+!CO32U(aq)+!Ca2+(aq)+!2NO3U(aq)!!CaCO3(s)!+!Na+(aq)+!NO3U(aq)!! C)!CO32U(aq)!+!Ca2+(aq)!!CaCO3(s)!!! D)!Na2CO3(aq)!+!Ca2+(aq)+!2NO3U(aq)!!CaCO3(s)!+!Na+(aq)+!NO3U(aq)!! E)!2Na+(aq)+!CO32U(aq)+!Ca2+(aq)+!2NO3U(aq)!!CaCO3(s)!+!2Na+(aq)+!2NO3U(aq)!!!!8!8.!!To!what!volume!(in!L)!should!you!dilute!0.200!L!of!a!15.0!M!NaOH!solution!to!obtain!a!3.00!M!NaOH!solution?!!! A)!25.0!L!! B)!1.00!L!! C)!22.5!L!! D)!15.0!L!! E)!4.00!L!!!!!9.!!What!are!the!spectator!ions!when!aqueous!solutions!of!KI!and!Pb(NO3)2!are!mixed?!!! A)!K+!and!IU!! B)!Pb2+!and!NO3U!! C)!K+!and!NO3U!! D)!Pb2+!and!IU!! E)!K+!and!Pb2+!!!!10.!How!many!oxygen!atoms!are!in!225!g!of!Fe(NO2)3?!!The!molar!mass!of!Fe(NO2)3!is!193.88!g/mol).!!! A)!4.19!x!1024!! B)!2.10!x!1024!! C)!6.96!x!1023!! D)!3.48!x!1023!! E)!6.02!x!1023!!!!11.!!Which!are!the!spectator!ions!when!nitric!acid!reacts!with!potassium!hydroxide?!!HNO3(aq)!+!KOH(aq)!!!H2O(l)!+!KNO3(aq)!!! A)!H+!and!NO3U!! B)!H+!and!OHU!! C)!K+!and!NO3U!! D)!NO3U!and!OHU!! E)!K+!and!H+!!!!!9!12.!!A!sample!of!an!orange!compound!is!26.59%!K,!35.36%!Cr,!and!38.08%!O!by!mass.!!What!is!the!empirical!formula!for!the!compound?!!!!! A)!KCrO!! B)!KCrO2!! C)!K3Cr4O4!! D)!K2Cr2O7!! E)!You!must!know!the!molar!mass!of!the!compound!to!answer!this!question.!!!!!13.!!The!active!ingredient!of!some!antiperspirants!is!Al2(OH)5Cl.!!What!is!the!mass!percent!of!oxygen!in!this!compound?!!!! A)!9.17%!! B)!45.9%!! C)!14.5%!! D)!19.2%!! E)!95.8%!!!15.!Which!ions!correlate!to!the!image!shown?!Note!that!stoichiometric!ratios!are!not!shown.!!! A! ! B! ! C! ! D! !! A)! Na+! ! NO3U! ! PO43U! ! Ba2+!! B)!! Ba2+! !Na+! ! NO3U! ! PO43U!! C)!! Na+! !Ba2+! !ClU! !NO3U!! D)!! Na+! ! ClU! ! Ba2+! ! NO3U!! E)!! NH4+! ! Na+! ! ClU! !SO42U!!!10!!16.!!What!is!the!coefficient!for!CH2O!when!the!following!equation!is!properly!balanced?!!!
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