AAMC CPF

Question 1

intensity of a uniform electric field E

Answer 1

voltage V and distance d over which it is applied as E = V/d

Question 2

what does carboxylation mean

Answer 2

addition of a carboxylic acid group to a structure

Question 3

what is power; how do you obtain joules from it?

Answer 3

power is work over time, thus power units of Watt [W] = [J/s]. Thus, multiplying watts by a unit of time (ie seconds) would yield the energy in joules.

Question 4

what differs whether a reaction is ruled by kinetic or thermodynamic preferences?

Answer 4

The kinetic product generally has to rearrange to become thermodynamically stable, whereas the thermodynamic product does not rearrange because it is already in the most stable form.

Question 5

delta G equations at equilibrium

Answer 5

delta G is 0 at equilibrium
delta G = delta Go + RT ln (Keq)

thus, delta Go = - RT ln (Keq)

Question 6

how does deprotonation affect nucleophilicity

eg. of a water

Answer 6

Deprotonation of the reacting water will make it more nucleophilic and reactive towards the electrophilic carbonyl atom

Question 7

wavelength of visible light?

Answer 7

The wavelength of visible light is between about 400 to 750 nm.

Question 8

multiplication factor

giga
mega
kilo
hecto

centi
milli
micro
nano
pico

Answer 8

giga = G = 10^9
mega = M = 10^6
kilo = k = 10^3
hecto = h = 10^2

centi = c = 10^-2
milli = m = 10^-3
micro =  = 10^-6
nano = n = 10^-9
pico = p = 10^-12

Question 9

mechanical work by an elastic force

Answer 9

W = ksx2/2 = Fx/2

Question 10

fundamental frequency of a vibrating string

Answer 10

f = v/(2L)