Princeton Course Test 1 Flashcards
1
Q
if something is eluted in thin layer chromatography, is that in the mobile or stationary phase?
A
- mobile!
2
Q
charge stored per unit voltage
A
C=QV
3
Q
equation for capacitance of a parallel plate capacitor
A
C= kEoA/d
4
Q
resistors and capacitors in parallel have the same
A
- voltage (potential difference)
5
Q
maximum number of stereoisomers a compound may have
A
2^n
n= number of chiral centers
6
Q
saponification
A
- base mediated hydrolysis of an ester
7
Q
what does a plane of symmetry indicate
A
- a meso compound
8
Q
boiling point depends on
A
- ability to hydrogen bond
- among other things
9
Q
boiling point affected by
A
- The relative strength of the four intermolecular forces is: Ionic > Hydrogen bonding > dipole dipole > Van der Waals dispersion forces. The influence of each of these attractive forces will depend on the functional groups present.
- Boiling points increase as the number of carbons is increased.
- Branching decreases boiling point.
10
Q
high Rf value in thin layer chromatography
A
- will be nonpolar
11
Q
what can Hardy Weinberg not be used to describe?
A
- changes in chromosome number
12
Q
active transport gradient
A
- moving against a gradient
13
Q
facilitated diffusion gradient
A
- movement of molecules down a gradient with the involvement of a protein
14
Q
gyrase
A
- used to supercoil DNA
15
Q
how eukaryotes coil DNA
A
- use of histones
