CHEM 2001 EXAM 1 SPRING 2026
NAME: Avswen Kev EXAM GRADE:
Question 1: (6 points)
Determine whether each scenario is an example of a qualitative analysis or a quantitative analysis. Write
your answer in the blank.
e A scientist analyzes a sample of ground water to determine which heavy metals have contaminated
the source. _Qoawteuveé |- 5
e A scientist analyzes a sample of ground water to determine how much lead is present. QuavtipvE | ¢
e A pharmaceutical technician analyzes the product of an experiment to see how much active
ingredient in a new medication was produced. Queem Teive 1y
e A pharmaceutical technician analyzes the product of an experiment to see if any side-reactions have
occurred. _Qoslrpticd ) &
Question 2: (8 points)
A blood test was conducted to determine the total cholesterol (C27Ha60C27H460, MW=386.65 g/mol)
level in a patient's blood. The total cholesterol concentration was determined to be 213 mg/dL. Calculate
the total cholesterol concentration in molarity and in ppm. Show your work for full or partial credit.
et 2¢p¢€ 2/:‘6//
l l — p.0055H
2309 _Lo._{_{{ ¢ _ I «x Sy o
/Z: L 74 38¢.% g
| PAd
Ri S
N2y ;o«;(/t: 21303 _ ePo
P e L
Question 3: (5 points)
What type of error is present in these scenarios below? Write your answer into the blank.
e Four consecutive 20 pL injections of a solution were made. The area of the analyte peak was
4383, 4410, 4401, and 4390 units.;___RA=20r1 2-5
e A solid salt compound used for an experiment is contaminated with sugar:_SyJ réma1i¢ %
, CHEM 2001 EXAM 1 SPRING 2026
Question 4: (5 points)
Which statement regarding volumetric flasks is false? (Circle your answer)
A. Volumetric flasks are calibrated to contain a particular volume at 20 °C.
< et ( B.)Volumetric flasks are calibrated to deliver their indicated volume at 20 °C.
C. To properly use a volumetric flask, dissolve the reagent less than the final volume of liquid and
dilute to volume.
D. The volume of the flask changes with temperature because liquid and glass expand when heated.
E. To obtain the calibriated volume, the bottom of the meniscus is aligned with the center of the
mar on the neck of the flask
Question 5: (8 points)
How many milliliters of 12.1 M HCl are needed to prepare 500.0 mL of 1.00 M HCI? Which type of
glassware should you use to make this solution? Show your work for full or partial credit.
WV, = [606W x 590 el
LAR %
Vi - __[:(gr'\ X €00.6 ml - .3 L Set
12,
) 7
Vorongtic fLasi 2¢€
5o00.0 L
V‘ - _Sc’n,ol,o ((CA\/moHr\_ lp(fgff(_f w {Pé
NAME: Avswen Kev EXAM GRADE:
Question 1: (6 points)
Determine whether each scenario is an example of a qualitative analysis or a quantitative analysis. Write
your answer in the blank.
e A scientist analyzes a sample of ground water to determine which heavy metals have contaminated
the source. _Qoawteuveé |- 5
e A scientist analyzes a sample of ground water to determine how much lead is present. QuavtipvE | ¢
e A pharmaceutical technician analyzes the product of an experiment to see how much active
ingredient in a new medication was produced. Queem Teive 1y
e A pharmaceutical technician analyzes the product of an experiment to see if any side-reactions have
occurred. _Qoslrpticd ) &
Question 2: (8 points)
A blood test was conducted to determine the total cholesterol (C27Ha60C27H460, MW=386.65 g/mol)
level in a patient's blood. The total cholesterol concentration was determined to be 213 mg/dL. Calculate
the total cholesterol concentration in molarity and in ppm. Show your work for full or partial credit.
et 2¢p¢€ 2/:‘6//
l l — p.0055H
2309 _Lo._{_{{ ¢ _ I «x Sy o
/Z: L 74 38¢.% g
| PAd
Ri S
N2y ;o«;(/t: 21303 _ ePo
P e L
Question 3: (5 points)
What type of error is present in these scenarios below? Write your answer into the blank.
e Four consecutive 20 pL injections of a solution were made. The area of the analyte peak was
4383, 4410, 4401, and 4390 units.;___RA=20r1 2-5
e A solid salt compound used for an experiment is contaminated with sugar:_SyJ réma1i¢ %
, CHEM 2001 EXAM 1 SPRING 2026
Question 4: (5 points)
Which statement regarding volumetric flasks is false? (Circle your answer)
A. Volumetric flasks are calibrated to contain a particular volume at 20 °C.
< et ( B.)Volumetric flasks are calibrated to deliver their indicated volume at 20 °C.
C. To properly use a volumetric flask, dissolve the reagent less than the final volume of liquid and
dilute to volume.
D. The volume of the flask changes with temperature because liquid and glass expand when heated.
E. To obtain the calibriated volume, the bottom of the meniscus is aligned with the center of the
mar on the neck of the flask
Question 5: (8 points)
How many milliliters of 12.1 M HCl are needed to prepare 500.0 mL of 1.00 M HCI? Which type of
glassware should you use to make this solution? Show your work for full or partial credit.
WV, = [606W x 590 el
LAR %
Vi - __[:(gr'\ X €00.6 ml - .3 L Set
12,
) 7
Vorongtic fLasi 2¢€
5o00.0 L
V‘ - _Sc’n,ol,o ((CA\/moHr\_ lp(fgff(_f w {Pé
