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CHEM 103 EXAM 2 QUESTIONS AND ANSWERS||A+ SOLUTION GUIDE ACTUAL EXAM ALL QUESTIONS AND WELL ELABORATED ANSWERS TOP RATED VERSION FOR ALREADY A+ GRADED HIGHLY RECOMMENDED |NEW AND REVISED

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CHEM 103 EXAM 2 QUESTIONS AND ANSWERS||A+ SOLUTION GUIDE ACTUAL EXAM ALL QUESTIONS AND WELL ELABORATED ANSWERS TOP RATED VERSION FOR ALREADY A+ GRADED HIGHLY RECOMMENDED |NEW AND REVISED

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2026/2027

Institution STRAIGHTERLINE CHEMISTRY

Course STRAIGHTERLINE CHEMISTRY

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CHEM 103 EXAM 2 QUESTIONS AND ANSWERS||A+ SOLUTION GUIDE ACTUAL EXAM ALL QUESTIONS AND WELL ELABORATED ANSWERS TOP RATED VERSION FOR ALREADY A+ GRADED HIGHLY RECOMMENDED |NEW AND REVISED

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CHEM 103 EXAM 2 QUESTIONS AND
ANSWERS||A+ SOLUTION GUIDE
ACTUAL EXAM ALL QUESTIONS AND
WELL ELABORATED ANSWERS TOP
RATED VERSION FOR ALREADY A+
GRADED HIGHLY RECOMMENDED
|NEW AND REVISED
DensityC-
CCORRECTCANSWERdirectlyCrelatedCtoCmassCandCpressure,CinverselyCrelatedCtoCtemperature

WhenCmeasuredCunderCtheCsameCsetCof

conditions,CwhichCgasCisCexpectedCtoChaveCthe

highestCdensity?

A.CO2

B.CXe

C.CHe

D.CTheyCwouldCallCbeCtheCsameC-CCORRECTCANSWERB.CHigherCmass=higherCdensity

WhatCmassCofCsodiumCazide,CNaN3,C(molarCmassC=

65.01Cg/mol)CisCrequiredCtoCinflateCaC45.5CLCairbagCtoCa

pressureCofC828CmmHgCatC20.0

oC?

A.C201Cg

B.C2.06Cg

C.C0.0317Cg

,D.C132Cg

E.C89.3CgC-CCORRECTCANSWERE.C89.3Cg

44.0CgramsCofCgasCatCSTPCoccupiesC22.4CL.

TheCgasCcouldCbe

A.CO2

B.CN2

C.CCO2

D.ArC-CCORRECTCANSWERCO2:CmolarCmassCisC44CgCandCbecauseCofCSTPC

PV=nRT

(1)(22.4)=(.08206)(273.15)n

n=1Cmole

WhatChappensCtoCtheCdensityCofCaCgasCinCa

sealedCglassCflaskCifCtheCtemperatureCisCraised?

A.CDensityCwillCincrease.

B.CDensityCwillCdecrease.

C.CDensityCwillCremainCtheCsameC-
CCORRECTCANSWERC.CPressureCandCtemperatureCincreaseCbyCtheCsameCratio

d=pm/RT

AC1.00CLCflaskCcontainsCaCmixtureCofCAr,CN2Cand

O2.CIfCPTotalC=C4.5Catm,CandCPArC=CPO2C=C1.0Catm,CwhatCisCPN2?

A.C1.0Catm

B.C1.5Catm

C.C2.5Catm

,D.CCannotCbeCdeterminedCunless

temperatureCisCgivenC-CCORRECTCANSWERC.CPtotalC=CPArC+CPO2C+CPN2

4.5C=C1C+C1C+CPN2

PN2C=C2.5

AC1.00CLCflaskCcontainsCaCmixtureCofCAr,CN2,CandCO2.

IfCPTotalC=C4.5Catm,CandCPArC=CPO2C=C1.0Catm,CwhatCisCtheCvolumeCoccupiedCbyCtheCoxygen?

A.C0.22CL

B.C0.56CL

C.C1.00CL

D.CCannotCbeCdeterminedCunless

temperatureCisCgivenC-CCORRECTCANSWERC.COccupiesCentireCflaskCevenCwhenCpartCofCaCmixture

GasCMixtures:CKeyCConceptsC-CCORRECTCANSWERPtotalC=CPArC+CPO2C+CPN2

PgasC=C(ngas/ntotal)C*CPtotal

ngas/ntotalC=CXgas,CmoleCfraction

*aCgasCthatCmakesCupC21%CorC.21CofCaCmixtureCwillCcontributeC21%CofCtheCtotalCpressure*

AC1.00CLCflaskCcontainsCaCmixtureCofCAr,CN

2,CandCO2.

IfCPTotalC=C4.5Catm,CandCPArC=CPO2C=C1.0Catm,CwhatCisCtheCmoleCfractionCofCAr?

A.C0.22

B.C0.56

C.C1.00

D.CCannotCbeCdeterminedCunless

, temperatureCisCgivenC-CCORRECTCANSWERA.CPVC=CnRT

PAr/Ptotal

1.0/4.5

IfCmoreCN2CisCintroducedCintoCtheCsameCflaskCso

thatCitsCpartialCpressureCincreasesCtoC4.0Catm,

whatChappensCtoCPO2?

A.CItCincreases

B.CItCdecreases

C.CItCstaysCtheCsameC-CCORRECTCANSWERC.CItCstaysCtheCsame

CH4CandCO2CareCmixedCinCaCstoichiometric

ratioCinCaCglassCflask,CtheCtotalCpressureCinCthe

flaskCisC600CmmHg.CWhatCisCtheCpartialCpressure

ofCeachCgasCpriorCtoCcombustion?

ToCdetermineCtheC"stoichiometricCratio",

weCneedCaCbalancedCchemicalCequation.

WhatCisCit?C-CCORRECTCANSWERCH4C+C2O2C=CCO2C+CH2O

CH4CandCO2CareCmixedCinCaCstoichiometricCratioCinCa

glassCflask,CtheCtotalCpressureCinCtheCflaskCisC600

mmHg.CWhatCisCtheCpartialCpressureCofCeachCgasCprior

toCcombustion?

balancedCchemicalCequationCis:CCH4C+C2O2C=CCO2C+CH2O

A.CPO2C=C600CmmHgCPCH4C=C600CmmHg

B.CPO2C=C300CmmHgCPCH4C=C300CmmHg

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Uploaded on: September 30, 2026
Number of pages: 41
Written in: 2026/2027
Type: Exam (elaborations)
Contains: Questions & answers

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