Test Bank for General Chemistry 10th
f f f f f
Edition by Darrell Ebbing, Steven D.
f f f f f
Gammon
SAMPLE
Chapter 3 – Calculations with Chemical Formulas and Equations
f f f f f f f f
Chapter 3 – Calculations with Chemical Formulas and Equations
f f f f f f f f
1.fThefmolecularfformulafoffafparticularfsolidfisfC8H6O8.fItsfmolecularfmassfisf
A)f352famu.
B)118famu.
C)f364famu.f
D)f230famu.f
E)f226famu.
ANS:fDf
PTS:f1fDIF:feasyfREF:f3.1OBJ:fCalculatefthefformulafmassffromfafformula.f(Example
3.1)fTOP:fstoichiometryf|fmassfandfmolesfoffsubstancefKEY:fmolecularfmassfMSC:fgeneral
chemistry
2.fThefhydrocarbonfheptanefhasfthefstructuralfformulafCH3(CH2)5CH3.fWhatfisfthefmolecular
massfoffthisfhydrocarbon?f
A)f100.2famu.
B)f0.009980famu.
C)f86.17famu.
D)f0.01160famu.
E)f110.2ffamu.
,ANS:fAfPTS:f1f
DIF:feasyfREF:f3.1OBJ:fCalculatefthefformulafmassffromfafformula.fTOP:
Stoichiometryf|fmassfandfmolesfoffsubstance
3.fAfsinglefmoleculefoffpolystyrenefhasfthefrepeatingfunitf-[CH2CH(C6H5)]n-,fwherefnfisfthe
numberfoffrepeatingfunits.fWhatfisfthefvaluefoffnfiffthefmolecularfmassfoffafsinglefpolymer
Chainfisfamu?f
A)fUnits.f
B)fUnits.f
C)fUnits.f
D)fUnits.f
E)fUnits.
ANS:fAfPTS:f1f
DIF:fmoderatefREF:f3.1OBJ:fCalculatefthefformulafmassffromfafformula.fTOP:
Stoichiometryf|fmassfandfmolesfoffsubstancef
Thefformulafmassfoffaluminumfoxalate,fAl2(C2O4)3,fisf
A)f140famu.
B)f318famu.
C)f283amu.
D)f213famu.
E)f185famu.
ANS:fBfPTS:f
1fDIF:feasyfREF:f3.1OBJ:fCalculatefthefformulafmassffromfafformula.f(Example
3.1)fTOP:fstoichiometryf|fmassfandfmolesfoffsubstancefKEY:fformulafmass
MSC:fgeneralfchemistry
5.fThefformulafmassfoffzincfacetateftrihydrate,fZn(CH3COO)2f•f3H2O,fis
, A)f321famu.
B)f184amu.
C)f268famu.
D)f238famu.
E)f114famu.
ANS:fDfPTS:f1f
DIF:feasyfREF:f3.1OBJ:fCalculatefthefformulafmassffromfafformula.f(Example
3.1)fTOP:fstoichiometryf|fmassfandfmolesfoffsubstancefKEY:fformulafmassfMSC:fgeneral
chemistry
6.fTheffullyfhydratedfformfoffsodiumfsulfatefisfthefdecahydrate,fNa2SO4f•f10H2O.fWhen
heatedfthefhydratedfsaltflosesfwater.fHowfmanyfwaterfmoleculesfareffoundfperfformulafunitfinfa
partiallyfdehydratedfsamplefoffsodiumfsulfatefwithfafformulafmassfoff160.1famuf(i.e.ffindfn
forfNa2SO4f•fnH2O)?
A)f1fwaters.
B)f5fwaters.
C)f3fwaters.
D)f4fwaters.
E)f7fwaters.
ANS:fAfPTS:f1f
DIF:fmoderatefREF:f3.1OBJ:fCalculatefthefformulafmassffromfafformula.fTOP:
Stoichiometryf|fmassfandfmolesfoffsubstance
7.fWhatfisfthefmolecularfmassfoffcycloheptane,fC7H14?
A)f13.02famu
B)f1191.19famu
C)f85.08amu
f f f f f
Edition by Darrell Ebbing, Steven D.
f f f f f
Gammon
SAMPLE
Chapter 3 – Calculations with Chemical Formulas and Equations
f f f f f f f f
Chapter 3 – Calculations with Chemical Formulas and Equations
f f f f f f f f
1.fThefmolecularfformulafoffafparticularfsolidfisfC8H6O8.fItsfmolecularfmassfisf
A)f352famu.
B)118famu.
C)f364famu.f
D)f230famu.f
E)f226famu.
ANS:fDf
PTS:f1fDIF:feasyfREF:f3.1OBJ:fCalculatefthefformulafmassffromfafformula.f(Example
3.1)fTOP:fstoichiometryf|fmassfandfmolesfoffsubstancefKEY:fmolecularfmassfMSC:fgeneral
chemistry
2.fThefhydrocarbonfheptanefhasfthefstructuralfformulafCH3(CH2)5CH3.fWhatfisfthefmolecular
massfoffthisfhydrocarbon?f
A)f100.2famu.
B)f0.009980famu.
C)f86.17famu.
D)f0.01160famu.
E)f110.2ffamu.
,ANS:fAfPTS:f1f
DIF:feasyfREF:f3.1OBJ:fCalculatefthefformulafmassffromfafformula.fTOP:
Stoichiometryf|fmassfandfmolesfoffsubstance
3.fAfsinglefmoleculefoffpolystyrenefhasfthefrepeatingfunitf-[CH2CH(C6H5)]n-,fwherefnfisfthe
numberfoffrepeatingfunits.fWhatfisfthefvaluefoffnfiffthefmolecularfmassfoffafsinglefpolymer
Chainfisfamu?f
A)fUnits.f
B)fUnits.f
C)fUnits.f
D)fUnits.f
E)fUnits.
ANS:fAfPTS:f1f
DIF:fmoderatefREF:f3.1OBJ:fCalculatefthefformulafmassffromfafformula.fTOP:
Stoichiometryf|fmassfandfmolesfoffsubstancef
Thefformulafmassfoffaluminumfoxalate,fAl2(C2O4)3,fisf
A)f140famu.
B)f318famu.
C)f283amu.
D)f213famu.
E)f185famu.
ANS:fBfPTS:f
1fDIF:feasyfREF:f3.1OBJ:fCalculatefthefformulafmassffromfafformula.f(Example
3.1)fTOP:fstoichiometryf|fmassfandfmolesfoffsubstancefKEY:fformulafmass
MSC:fgeneralfchemistry
5.fThefformulafmassfoffzincfacetateftrihydrate,fZn(CH3COO)2f•f3H2O,fis
, A)f321famu.
B)f184amu.
C)f268famu.
D)f238famu.
E)f114famu.
ANS:fDfPTS:f1f
DIF:feasyfREF:f3.1OBJ:fCalculatefthefformulafmassffromfafformula.f(Example
3.1)fTOP:fstoichiometryf|fmassfandfmolesfoffsubstancefKEY:fformulafmassfMSC:fgeneral
chemistry
6.fTheffullyfhydratedfformfoffsodiumfsulfatefisfthefdecahydrate,fNa2SO4f•f10H2O.fWhen
heatedfthefhydratedfsaltflosesfwater.fHowfmanyfwaterfmoleculesfareffoundfperfformulafunitfinfa
partiallyfdehydratedfsamplefoffsodiumfsulfatefwithfafformulafmassfoff160.1famuf(i.e.ffindfn
forfNa2SO4f•fnH2O)?
A)f1fwaters.
B)f5fwaters.
C)f3fwaters.
D)f4fwaters.
E)f7fwaters.
ANS:fAfPTS:f1f
DIF:fmoderatefREF:f3.1OBJ:fCalculatefthefformulafmassffromfafformula.fTOP:
Stoichiometryf|fmassfandfmolesfoffsubstance
7.fWhatfisfthefmolecularfmassfoffcycloheptane,fC7H14?
A)f13.02famu
B)f1191.19famu
C)f85.08amu
