Full Length Exam Weaknesses (C/P) Flashcards
Introducing a catalyst lowers the
activation energy, always
How many reactants does a second order reaction have?
it can only have two
In a spontaneous reaction, we know Delta G must be <0, and therefore what must Keq be?
> 1
-log[H+] is equal to ….
pH
a very finely ground powder, suspended in a solution, but not dissolved, is known as
a colloid
molecules with hydrogen bonds have an increased boiling point or decreased?
increased.
In a neutral (uncharged) molecule, the oxidation numbers must add up to
zero
Mean Arterial Pressure at the head level but be (lesser/greater) than at the heart
lesser
During systole, elastic energy potential is stored in the ___
arterial wall
NH3 functions as a Lewis _____ because of its lone pair
Lewis Base
At STP, 1 mole of gas occupies ___- Liters
22.4 L
Most proteases are stereospecific, meaning they only cleave what form of peptides?
L- forms (and therefore D- amino acids display resistance to proteolysis)
What is the relationship between power, work and time?
Power (W) = Work (J) / Time (sec)
The molecule that is losing the electrons is referred to as the ____ agent
reducing
Is an oxidized form of a molecule one that contains a hydroxyl group or a ketone?
A ketone, as it has a double bond to oxygen (more bonds to oxygen)
Does a higher melting point mean higher or lower stability of a molecule?
higher stability
Strong acids have (strong/weak) conjugate bases
weak
Asking which compound has the most stable conjugate base is therefore also asking…..
which compound is the weakest acid (most stable acid)
What is Ohms law?
V= IR (voltage= current x resistance)
chiral centers have what sort of hybridization
sp3
What color has the shortest wavelength?
Violet
What color has the longest wavelength?
Red
wavelength and frequency are _____ proportional
inversely
what color has the highest frequency?
violet
in a second order reaction, rate is dependent on ______ reactant
BOTH of the reactants
Q is the concentration of _____
products
T or F; liquids do not typically undergo a large change in volume when temperature changes
T; gases, on the other hand, do change in volume– based on temperature
the ____ of a sound wave is the reciprocal of the frequency
period (period and wavelength are essentially the same thing)
the Doppler Effect shifts ______
frequency
Photons (DO/ DO NOT) have a charge
do not
pancreatic secretions are (acidic/basic)
acidic
hemiacetals are present in what biological molecule
sugars
Decarboxylation is the loss of what functional group
-COOH
____ is equal to the pH when half of the compound is in a protonated form and the other half is in a deprotonated form
the pKa
deprotonation occurs at a higher/lower ph
higher (more basic)
a shorter wavelengh is equal to photons of a ____ energy
higher/larger
going DOWN the periodic table, nucleophilicity ____
decreases
The products of the Pentose-Phosphate Pathway are:
Fructose-6-phosphate
Glyceraldehyde-3-phosphate
NADPH
Ribose-5-Phosphate
Amps x Time (in seconds) gives you the _____
charge
Centripetal force is the force pointing away from the center of a circle (T or F)
F, it is the force pointing towards the circle
Aromatic crown ethers are (soluble/insoluble) in water and alcohol
insoluble
WE know that all human amino acids have an L configuration, and this corresponds to (R) or (S) stereochemistry?
S
T or F; Catalysts affect Delta G
False, just activation energy
Would a larger atom or a smaller atom form a more stable conjugate base?
Larger
When converting from an aldehyde to carboxylic acid, is an oxygen gained or lost?
A bond to oxygen is gained (oxidation occurs)
Reverse transcriptase is used on ___
mRNA, to then create DNA
What causes amino acids to migrate in electrophoresis
Their charge
Aluminums oxidation number is always
+3
Hydrogen’s oxidation number is typically, and what is the exception
+1, except when bonded to metals (LaH, NaH, CaH2) and then it’s number is -1
Flourine’s oxidation number is always
-1
Alkali metals oxidation number is typically
+1
Alkaline earth metals oxidation number is typically
+2
Oxygen’s oxidation number is almost always
-2, except when in hydrogen peroxide (H2O2) or peroxide (O2)2- when its number is -1
