Labl Practicum:l CHEMl 120/l CHEM120l
(NEWl 2026/l 2027l Update)l Introductionl
tol General,l Organic,l andl Biologicall
Chemistryl withl Labl |l Questionsl &l
Answersl |l Gradel A|l 100%l Correctl
(Verifiedl Solutions)-Chamberlain
QUESTION
Convertl froml gl tol moll Stepl 1
Answer:
Findl thel molarl massl (g/mol)l ofl thel substance.l (Usel thel Periodicl Tablel -l addl upl thel
atomicl masses.)
QUESTION
Convertl froml gl tol moll Stepl 2
Answer:
Writel downl thel givenl grams.
QUESTION
Moles
Answer:
,gramsl ÷l molarl massl =l moles
QUESTION
Molarl Mass
Answer:
Thel massl ofl al substancel inl gramsl perl molel (g/mol),l calculatedl byl addingl upl thel
atomicl massesl usingl thel Periodicl Table.
QUESTION
Conversionl froml gl tol mol
Answer:
Stepl 3:l Dividel thel gramsl byl thel molarl mass.
QUESTION
Conversionl froml moll tol g
Answer:
Stepl 3:l Multiplyl thel molesl byl thel molarl mass:l molesl ×l molarl massl =l grams.
QUESTION
Acid
Answer:
Givesl awayl H+l (protonl donor).
, QUESTION
Base
Answer:
Acceptsl thel H+l (protonl acceptor).
QUESTION
Neutralizationl Reaction
Answer:
Occursl whenl anl acidl andl al basel reactl tol forml waterl andl al salt,l withl thel acidl givingl
anl H⁺l andl thel basel givingl anl OH⁻.
QUESTION
Buffers
Answer:
Consistl ofl al weakl acidl andl itsl conjugatel basel orl al weakl basel andl itsl conjugatel acid,l
andl resistl changesl tol pH.
QUESTION
pHl Scale
Answer:
pHl abovel 7l isl alkalinel orl basic,l pHl belowl 7l isl acidic,l andl pHl 7l isl neutral.
(NEWl 2026/l 2027l Update)l Introductionl
tol General,l Organic,l andl Biologicall
Chemistryl withl Labl |l Questionsl &l
Answersl |l Gradel A|l 100%l Correctl
(Verifiedl Solutions)-Chamberlain
QUESTION
Convertl froml gl tol moll Stepl 1
Answer:
Findl thel molarl massl (g/mol)l ofl thel substance.l (Usel thel Periodicl Tablel -l addl upl thel
atomicl masses.)
QUESTION
Convertl froml gl tol moll Stepl 2
Answer:
Writel downl thel givenl grams.
QUESTION
Moles
Answer:
,gramsl ÷l molarl massl =l moles
QUESTION
Molarl Mass
Answer:
Thel massl ofl al substancel inl gramsl perl molel (g/mol),l calculatedl byl addingl upl thel
atomicl massesl usingl thel Periodicl Table.
QUESTION
Conversionl froml gl tol mol
Answer:
Stepl 3:l Dividel thel gramsl byl thel molarl mass.
QUESTION
Conversionl froml moll tol g
Answer:
Stepl 3:l Multiplyl thel molesl byl thel molarl mass:l molesl ×l molarl massl =l grams.
QUESTION
Acid
Answer:
Givesl awayl H+l (protonl donor).
, QUESTION
Base
Answer:
Acceptsl thel H+l (protonl acceptor).
QUESTION
Neutralizationl Reaction
Answer:
Occursl whenl anl acidl andl al basel reactl tol forml waterl andl al salt,l withl thel acidl givingl
anl H⁺l andl thel basel givingl anl OH⁻.
QUESTION
Buffers
Answer:
Consistl ofl al weakl acidl andl itsl conjugatel basel orl al weakl basel andl itsl conjugatel acid,l
andl resistl changesl tol pH.
QUESTION
pHl Scale
Answer:
pHl abovel 7l isl alkalinel orl basic,l pHl belowl 7l isl acidic,l andl pHl 7l isl neutral.
