Examl 1:l CHEMl 120/l CHEM120l (Latestl
2026/l 2027l Update)l Introductionl tol
General,l Organic,l andl Biologicall
Chemistryl withl Labl Review|l Q/Al |l
Gradel A|l 100%l Correctl (Verifiedl
Answers)l -Chamberlain
Q:l Bariuml reactsl withl al polyatomicl ionl tol forml al compoundl withl thel generall
formulal Ba3(X)2.l Whatl wouldl bel thel mostl likelyl formulal forl thel compoundl formedl
betweennl sodiuml andl thel polyatomicl ionl X?
Na2X
NaX
Na3X
Na3X2
Na2X2
Answer:
Na3X
Q:l Anl objectl measuringl 77l mililitersl willl havel al volumel ofl ___________liters.
770
77000
7700
0.077
13
,Answer:
0.077
Q:l Al sodiuml differsl froml al sodiuml atoml inl thatl thel sodiuml ion
Isl anl isotopel ofl sodium
Hasl fewerl electrons
Existsl onlyl inl solution
Hasl al negativel chargel onl itsl nucleus
Answer:
Hasl fewerl electrons
Q:l Inl al neutrall atoms,l therel arel equall numberl of
Electronsl andl protons
Positronsl andl electrons
Protonsl andl neutrons
Neutronsl andl electrons
Answer:
Electronsl andl protons
Q:l Thel compoundl havingl thel formulal Cu3Nl isl named
tricopperl nitrate
copperl (I)l nitride
copperl nitride
copperl (I)l nitrate
, Answer:
copperl (I)l nitride
Q:l Anl atoml ofl thel mostl commonl isotopel ofl gold,l 197l Au,l hasl ___________protons,l
_______neutrons,l andl ____________electrons.
79,197,197
197,l 79,l 118
118,l 79,l 39
79,l 118,l 79
79,118,118
Answer:
79,l 118,l 79
Q:l Twol teamsl ofl studentsl experimentallyl determinedl thel densityl ofl ethanoll
(0.789g/mL),l usingl fourl trialsl each.l Thel datal arel shownl herel (alll valuesl inl g/mL):
l Teaml Al Teaml B
l Triall 1:l 0.799l 0.806
l Triall 2:l 0.782l 0.804
l Triall 3:l 0.772l 0.804
l Triall 4:l 0.787l 0.805
l Average:l 0.785l 0.805
Teaml Bl resultsl arel morel accuratel andl Teaml Bl resultsl arel morel precise.
Teaml Bl resultsl arel morel accuratel andl Teaml Al resultsl arel morel precise.
Teaml Al resultsl arel morel accuratel andl Teaml Al resultsl arel morel precise.
Teaml Al resultsl arel morel accuratel andl Teaml Bl resultsl arel morel precise.
Answer:
Teaml Al resultsl arel morel accuratel andl Teaml Bl resultsl arel morel precise.
2026/l 2027l Update)l Introductionl tol
General,l Organic,l andl Biologicall
Chemistryl withl Labl Review|l Q/Al |l
Gradel A|l 100%l Correctl (Verifiedl
Answers)l -Chamberlain
Q:l Bariuml reactsl withl al polyatomicl ionl tol forml al compoundl withl thel generall
formulal Ba3(X)2.l Whatl wouldl bel thel mostl likelyl formulal forl thel compoundl formedl
betweennl sodiuml andl thel polyatomicl ionl X?
Na2X
NaX
Na3X
Na3X2
Na2X2
Answer:
Na3X
Q:l Anl objectl measuringl 77l mililitersl willl havel al volumel ofl ___________liters.
770
77000
7700
0.077
13
,Answer:
0.077
Q:l Al sodiuml differsl froml al sodiuml atoml inl thatl thel sodiuml ion
Isl anl isotopel ofl sodium
Hasl fewerl electrons
Existsl onlyl inl solution
Hasl al negativel chargel onl itsl nucleus
Answer:
Hasl fewerl electrons
Q:l Inl al neutrall atoms,l therel arel equall numberl of
Electronsl andl protons
Positronsl andl electrons
Protonsl andl neutrons
Neutronsl andl electrons
Answer:
Electronsl andl protons
Q:l Thel compoundl havingl thel formulal Cu3Nl isl named
tricopperl nitrate
copperl (I)l nitride
copperl nitride
copperl (I)l nitrate
, Answer:
copperl (I)l nitride
Q:l Anl atoml ofl thel mostl commonl isotopel ofl gold,l 197l Au,l hasl ___________protons,l
_______neutrons,l andl ____________electrons.
79,197,197
197,l 79,l 118
118,l 79,l 39
79,l 118,l 79
79,118,118
Answer:
79,l 118,l 79
Q:l Twol teamsl ofl studentsl experimentallyl determinedl thel densityl ofl ethanoll
(0.789g/mL),l usingl fourl trialsl each.l Thel datal arel shownl herel (alll valuesl inl g/mL):
l Teaml Al Teaml B
l Triall 1:l 0.799l 0.806
l Triall 2:l 0.782l 0.804
l Triall 3:l 0.772l 0.804
l Triall 4:l 0.787l 0.805
l Average:l 0.785l 0.805
Teaml Bl resultsl arel morel accuratel andl Teaml Bl resultsl arel morel precise.
Teaml Bl resultsl arel morel accuratel andl Teaml Al resultsl arel morel precise.
Teaml Al resultsl arel morel accuratel andl Teaml Al resultsl arel morel precise.
Teaml Al resultsl arel morel accuratel andl Teaml Bl resultsl arel morel precise.
Answer:
Teaml Al resultsl arel morel accuratel andl Teaml Bl resultsl arel morel precise.
