CHEM 103 Final Exam

CHEM 103 FINAL EXAM QUESTIONS
AND CORRECT ANSWERS
Whichnof nthenfollowingnisnannexamplenofnanphysical nproperty?

a.nAbilityntonchange ncolor

b.nFlammability

c.nDensity

d.nSolubility



Examn1n- nCORRECTnANSWER-c.nDensity


Whichnof nthenfollowingnisnevidence nofnanchemicalnchange?

a.nReleasingnbubblesnofngas

b.nFloatingninnwater

c.nCrystallization

d.nVaporization

e.nNone nofnthenabove



Examn1n- nCORRECTnANSWER-a.nReleasingnbubblesnofngas



Accordingntonthenmetricnsystem,n1nmn=n0.001nwhat?

a.ncm

b.nmm

c.ndm

d.nkm

e.nNone nofnthenabove



Examn1n- nCORRECTnANSWER-d.nkm

,Subtractn9.0nx n10³nsecnfromn2.0nx n10⁴nsecnandnexpressnthenanswerninnscientificnnotation.

a.n1.1nx n10¹nsec

b.n1.1nx n10²nsec

c.n1.1nx n10³nsec

d.n1.1nx n10⁴nsec

e.n1.1nx n10⁵nsec



Examn1n- nCORRECTnANSWER-d.n1.1nx n10⁴nsec



Whichnof nthenfollowingnamountsnisnthenlargest?

a.n1.0nuL

b.n1.0nL

c.n1.0nmL

d.n1.0nML

e.n1.0nkL



Examn1n- nCORRECTnANSWER-d.n1.0nML



Addn250.0nmLnton5.00nmLnandnroundnoffnthenanswer.

a.n250nmL

b.n255nmL

c.n256nmL

d.n255.0nmL

e.n255.0nmL



Examn1n- nCORRECTnANSWER-d.n255.0nmL



Ifn10.4nmLnofnmercurynhasnanmassnofn0.197nkg,nwhatnisnthenmassninnpounds?

, a.n89400nlb

b.n0.434nlb

c.n4.51nlb

d.n89.4nlb

e.n4720nlb



Examn1n- nCORRECTnANSWER-b.n0.434nlb



Whatnisnthe nvolume noccupiednbynan10.0ngnsamplenof ngasolinenthatnhasnandensitynofn0.720ng/mL?

a.n0.720nmL

b.n0.0720nmL

c.n1.39nmL

d.n7.20nmL

e.n13.9nmL



Examn1n- nCORRECTnANSWER-e.n13.9nmL



Fornthe ncalculationn(1.200nx n1.23466nx n1.0986) n-n1.33,nwhichnisnthencorrectnanswer?

a.n0.298

b.n0.3

c.n0.30

d.n0.2977

e.n0.29



Examn1n- nCORRECTnANSWER-c.n0.30



The nnumbern0.02150nhasnhownmanynsignificantnfigures?

a.n3

b.n4