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MCAT AAMC QUESTION AND ANSWERS
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MCAT AAMC QUESTION AND ANSWERS
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MCAT AAMC QUESTION AND ANSWERSTemperature is related to ke how? - answers- temp is the average kinetic energy
Thermal energy is related to ke how? - answers- thermal energy is the total ke
Enthalpy of fusion is always greater than enthalpy of vaporization because? - answers-
it has to break more bonds (solid --> liquid)
The amount of heat depends on (2 factors) - answers- 1. The type of substance
2. The amount of the substance
During a phase change does temperature change? - answers- no
If an archaebacerial species lives in a pool that is 0.01 m hcl what is the ph of the
water?
A) 12
B) 6
C) 2
D) 0.01 - answers- c
Ph= - loh (h+)
Which of the following atoms has the largest atomic radius?
A) sodium
B) aluminum
C) sulfur
D) chlorine - answers- a
Which of the following atoms has the largest first ionization energy?
A) potassium
B) zinc
C) gallium
D) krypton - answers- d
What is the sum of the protons, neutrons, and electrons in strontium-90?
A) 90
B) 126
, C) 128
D) 218 - answers- c
According to trends in electronegativity, which of the following pairs of atoms is most
likely to form an ionic bond?
A) n and o
B) c and f
C) ca and i
D) si and cl - answers- c
Alcohols generally require acid catalysis in order to undergo substitution by
nucleophiles. The acid catalyst enhances the reaction by
A) increasing the solvent polarity
B) creating a better leaving group
C) neutralizing basic impurities
D) protecting the alcohol group - answers- b
Remember that the hydroxide ion is one of the worst leaving groups in substitution
reactions. So under acidic conditions the hydroxyl group is protonated such that the
leaving group is now water which is a superior leaving group.
The aqueous solutions of ionic compounds conduct electricity, whereas those of
covalent compounds do not.
With respect to bonding and electrical conductivity, sulfur hexafluoride sf6 would be
described as:
A) covalent and a nonconductor
B) ionic and a nonconductor
C) covalent and a conductor
D) ionic and a conductor - answers- a
Which of the following compounds has the same geometry as methane?
A) h2s
B) co2
C) xef4
D) sicl4 - answers- d
Like oxygen atoms in methanogens, which of the following elements can act as an
electron acceptor?
A) s
B) he
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