AAMC FL 4 CP Exam Test Questions and Answers Rated A
1. Limestone does NOT decompose when heated to does not decompose = not
900 K because, at 900 K, ΔH is: spontaneous!!
A.
positive and less than TΔS. therefore delta S needs to be -
B. and delta H is +
positive and greater than TΔS.
B
C.
negative and less than TΔS.
positive S means that it's going
D.
to be spontaneous
negative and greater than TΔS.
therefore we want S to be neg-
ative
2. When limestone is heated during Step 1, an equilib- when writing Keq, NEVER in-
rium is established. Which of the following expres- clude solids or liquids in the
sions is the equilibrium constant for the decompo- equation
sition of limestone?
A. only include aq or gas
[CaO]
Keq = [product]/[reactant]
B.
[CaCO3]
C.
[CO2]
D.
[CaO] × [CaCO3]
3. During Reaction 2, did the oxidation state of N remember how to find the oxi-
change? dation state!
A.
Yes; it changed from -3 to -4. hint, for the ion you're trying to
,AAMC FL 4 CP Exam Test Questions and Answers Rated A
B. find, have that has the X vari-
Yes; it changed from 0 to +1. able!
C.
No; it remained at -3. NH3
D. (x) + (3) = 0
No; it remained at +1. x =-3
NH4+
x + (4) = +1
x = -3
4. If all of Gas X (from Step 6) is held in a sealed cham- 1 mol = 22.4 L
ber at STP, what will be its approximate volume?
A. 22.4 L
B. 44.8 L
C. 67.2 L
D. 89.6 L
5. Why was it important that the cuvettes containing curvettes in spectroscopy
the glucose oxidase and the blood sample were
identical in terms of optical properties? they are measuring ab-
A. To enable the comparison of the absorption spec- sorbance!! therefore we need
tra to have a "reference" using the
B. To reduce the absorption in the glass walls curvette
C. To decrease the uncertainty in the wavelength
A! to enable the comparison of
D. To increase the absorption in the solutions
the absorption spectra
Passage: "a blood sample with 1/30 dilution ratio
was mixed in a transparent cuvette with an oxy-
gen-acceptor solution containing glucose oxidase."
6. What is the approximate energy of a photon in the plug it into E=hc/lambda, then
absorbed radiation that yielded the data in Table 1? divide it by the 1eV conversion
, AAMC FL 4 CP Exam Test Questions and Answers Rated A
(Note: Use 1 eV = 1.6 × 10-19 J and hc = 19.8 × 10-26
J•m.) 2 eV
A. 1 eV
B. 2 eV
C. 3 eV
D. 4 eV
7. According to Table 1, what is the concentration of YESSS
the glucose in the blood from which the diluted
sample was taken? set up a proportion with the
A. 60 mg/dL known value against the dilut-
B. 90 mg/dL ed blood sample, then solve for
C. 120 mg/dL X
D. 150 mg/dL
we get 5mg/dL as the glu-
cose concentration in the dilut-
ed sample
but we want to know the to-
tal, so we take the dilution ratio
1/30
30 x 5 = 150!
8. Suppose a blood sample tested above the range since the test sample is able
(6.0 mg/dL) of the standards used in the experi- normal range, we can simply
ment. What modification will provide a more precise just dilute it so we can use it bc
reading by data interpolation as opposed to extrap- now the glucose concentration
olation using the same standards? is now in acceptable rang
A. Increase the enzyme concentration.
1. Limestone does NOT decompose when heated to does not decompose = not
900 K because, at 900 K, ΔH is: spontaneous!!
A.
positive and less than TΔS. therefore delta S needs to be -
B. and delta H is +
positive and greater than TΔS.
B
C.
negative and less than TΔS.
positive S means that it's going
D.
to be spontaneous
negative and greater than TΔS.
therefore we want S to be neg-
ative
2. When limestone is heated during Step 1, an equilib- when writing Keq, NEVER in-
rium is established. Which of the following expres- clude solids or liquids in the
sions is the equilibrium constant for the decompo- equation
sition of limestone?
A. only include aq or gas
[CaO]
Keq = [product]/[reactant]
B.
[CaCO3]
C.
[CO2]
D.
[CaO] × [CaCO3]
3. During Reaction 2, did the oxidation state of N remember how to find the oxi-
change? dation state!
A.
Yes; it changed from -3 to -4. hint, for the ion you're trying to
,AAMC FL 4 CP Exam Test Questions and Answers Rated A
B. find, have that has the X vari-
Yes; it changed from 0 to +1. able!
C.
No; it remained at -3. NH3
D. (x) + (3) = 0
No; it remained at +1. x =-3
NH4+
x + (4) = +1
x = -3
4. If all of Gas X (from Step 6) is held in a sealed cham- 1 mol = 22.4 L
ber at STP, what will be its approximate volume?
A. 22.4 L
B. 44.8 L
C. 67.2 L
D. 89.6 L
5. Why was it important that the cuvettes containing curvettes in spectroscopy
the glucose oxidase and the blood sample were
identical in terms of optical properties? they are measuring ab-
A. To enable the comparison of the absorption spec- sorbance!! therefore we need
tra to have a "reference" using the
B. To reduce the absorption in the glass walls curvette
C. To decrease the uncertainty in the wavelength
A! to enable the comparison of
D. To increase the absorption in the solutions
the absorption spectra
Passage: "a blood sample with 1/30 dilution ratio
was mixed in a transparent cuvette with an oxy-
gen-acceptor solution containing glucose oxidase."
6. What is the approximate energy of a photon in the plug it into E=hc/lambda, then
absorbed radiation that yielded the data in Table 1? divide it by the 1eV conversion
, AAMC FL 4 CP Exam Test Questions and Answers Rated A
(Note: Use 1 eV = 1.6 × 10-19 J and hc = 19.8 × 10-26
J•m.) 2 eV
A. 1 eV
B. 2 eV
C. 3 eV
D. 4 eV
7. According to Table 1, what is the concentration of YESSS
the glucose in the blood from which the diluted
sample was taken? set up a proportion with the
A. 60 mg/dL known value against the dilut-
B. 90 mg/dL ed blood sample, then solve for
C. 120 mg/dL X
D. 150 mg/dL
we get 5mg/dL as the glu-
cose concentration in the dilut-
ed sample
but we want to know the to-
tal, so we take the dilution ratio
1/30
30 x 5 = 150!
8. Suppose a blood sample tested above the range since the test sample is able
(6.0 mg/dL) of the standards used in the experi- normal range, we can simply
ment. What modification will provide a more precise just dilute it so we can use it bc
reading by data interpolation as opposed to extrap- now the glucose concentration
olation using the same standards? is now in acceptable rang
A. Increase the enzyme concentration.
