TEST 2026 COMPLETE TEST BANK WITH
SOLUTIONS GRADED A+
◉ What is the ratio of cation to enzyme in the spectroelectrochemical
experiments described in the passage? Answer: cation : enzyme
passage says Na+NQR was diluted to a final concentration of 0.75 mM
in 0.150 molar of the cation ions
cation .15 M:
◉ The reaction between NADH and ubiquinone is exergonic, but the
reaction, when catalyzed by Na+-NQR, does not generate much heat in
vivo. What factor accounts for this difference? Answer: Conservation of
energy, it is not created nor destroyed but merely changes forms
A. Is not possible, Even if it was heat generation would be larger for a
catalyzed rection.
C. is impossible, reactants have to be close together to react
The movement of a charged particle against its concentration gradient is
energetically costly.
◉ Two open flasks I and II contain different volumes of the same liquid.
Suppose that the pressure is measured at a point 10 cm below the surface
,of the liquid in each container. How will the pressures compare?
Answer: pressure=pgh
g=10
p= density (same liquid so same density)
h= 10 cm
both have same height so pressure will be the same-- if heights were
different pressure would be different
◉ Question
Which of the following substances is polar? Answer: If there is a net
dipole it is polar
◉ Question
If all else is held constant, which of the following changes would NOT
double the volume of a gas? Answer: pv=nrt
◉ What is the number of neutrons in the nucleus of the atom used to
produce laser radiations? Answer: 86Kr+ laser
86= mass
Kr has proton number as 36
86-36=50
the cation or anion charge with any element is indicative of the charge
aka electron count
, ◉ What is the molecular formula of the heterocyclic aromatic compound
pyrrole? Answer: passage says its a tetra pyrrole so there are 4 carbons
◉ The radiation of wavelength 605 nm CANNOT be used to produce
the fluorescence radiations depicted in Figure 3 because: Answer:
Maybe if you read the passage for once in your life and not get confident
then maybe you wouldn't have to take the exam for a third time
Not D because look at the passage
not C because of E=hc/lambda (high wavelength low energy)
◉ Approximately how many moles of Kr+ are contained in the laser
tube at 0°C and 1 atm? Answer: Have to recognize STP conditions of 0
C and 1 atm (22.4 L)
Volume in PV=nrt is in L
1cm^3=1mL
◉ The CD spectroscopy signal that was used to generate the data in
Figure 1 arises from the chirality of the: Answer: look for what is chiral
B is not
C is not
D- most beta carbons are not chiral