Chemistry 050 Information Sheet

1. Effective Fall of 1992, Chemistry 050 is a prerequisite for Chemistry 111.

2. There is no prerequisite for Chemistry 103.

3. If you are planning to take Chemistry 111 but don't want to take Chemistry 50 then:

a. You must receive a passing score on the chemistry placement exam, OR

b. Grade of A or B in high school chemistry and minimum 560 math SAT or minimum 25 math ACT score, OR

c. Grade of A or B in high school chemistry and completion of Math 180 with a C or better, OR

d. Grade of A or B in high school chemistry and a rating of M4 or M5 on the Math Placement Test.

* Students wanting to enroll in Chem 111 prior to the placement exam should also enroll in Chem 050. Once the placement exam results are available, the student would drop one course or the other.

4. A sample of the types of questions on the chemistry fundamentals placement exam appears below. The chemistry fundamentals placement exam is designed to test your knowledge of basic chemistry. Topics covered on the exam are: significant figures, the metric system, dimensional analysis (unit conversion), density, nomenclature of simple inorganic compounds and common acids, percent mass calculations, scientific notation, balancing equations, molecular weight, stoichiometry, molarity, dilutions, basic algebra, and graphing. You should have had most of these topics in your high school chemistry course. With the stoichiometry problems, do not worry about limiting reagent type calculations.


What appears below is a copy of the instructions that accompany the Chemistry 050 placement test. Following the instructions are a few sample questions. You will be supplied with a periodic table, but you need to bring a non-text entry scientific calulator, #2 pencil and photo ID.

Chem 050 Placement Exam Instructions

1. You may take this exam more than one time under the following conditions:

a) You must wait A MINIMUM of two months before attempting to take this exam again.

b) The exam may be repeated ONLY during the scheduled times.

Students enrolled in Chem 050 in a given semester are not eligible to take the placement exam when it is offered during preregistration advising for the next semester.

2. In order to pass this test you must get a score of 60% or better. (The "real" test will have 25 questions, so you must get a minimum 15 out of 25 questions correct.)

3. You are not allowed to remove the exam or any related materials from the test site.

4. The exam will be changed each time it is given.

5. In order to take the exam, you need to bring a picture ID, non-text entry scientific calculator, and a #2 pencil.

SAMPLE TEST QUESTIONS

1. If 1.0 L of a 0.50 M NaCl solution is diluted to 2.5 X 103 mL, what is the molarity of the resulting solution?

a) 0.20 M

b) 2.0 X 10-4 M

c) 4.0 X10-3

d) 0.40

e) 0.002 M

2. How many of the numbers below have 5 significant figures?

19.000

0.00006

1.6090 X 108

13607

a) 0 d) 3

b) 1 e) 4

c)2

3. The correct formula for Nitric Acid is:

a) HNO4

b) H2NO3

c) HNO2

d) HNO3

e) H2NO

4. Iron (III) Sulfite has the formula

a) Fe3SO3

b) Fe2(SO4)3

c) Fe2(SO3)3

d) Fe2SO4

e) Fe2SO3

5. 10.0 g of a liquid that has a density of 20.0 g/mL needs to be measured out in a graduated cylinder. What volume should be used?

a) 200. mL

b) 2.00 mL

c) 20 mL

d) 0.500 mL

e) 1.00 mL

6. One gram of alum, KAl(SO4)2 . 12H20, contains 1.3 X 1021 Al atoms. How

many oxygen atoms are contained in 1.0 g alum?

a) 1.2 X 1021

b) 2.6 X 1022

c) 1.6 X 1022

d) 1.0 X 1022

e) 2.1 X 1022

7. If 12.0 g of PCl5 reacts completely with water in the balanced chemical reaction below, how many grams of HCl will be produced?

PCl5 + 4H2O --> H3PO4 + 5HCl

a) 10.5 g

b) 2.10 g

c) 0.420 g

d)0.0952 g

e) 0.0576 g

8. When the equation below is properly balanced, what is the coefficient for S8?

Cr + S8 --> Cr2S3

a) 1

b) 2

c) 3

d) 4

e) none of these

9. An antacid tablet containing 0.50 g of NaHCO3 is dissolved in 250 mL of water. What is the molar concentration of HaHCO3 in the solution?

a) 0.024 M

b) 4.1 M

c) 0.022 M

d) 0.0060 M

e) 0.0041 M

10. What is the molecular weight of H2O?

a) 16.00 g

b) 18.0 g

c) 32.0 g

d) 2.0 g

e) 34.0 g

11. How many mL of 0.250 M H2SO4 is required to completely react with 25.0 mL of 1.500 M NaOH?

a) 150. mL

b) 50.0 mL

c) 300. mL

d) 75.0 mL

e) none of these

12. Assume that you are a physician administering a drug in a solution containging 5.0 mg drug/L solution. If the recommended dosage of the drug is 3.5 X 10-6 g per kilogram of body weight, what volume of solution would you prescribe daily for a 150 lb patient (1 lb = 454 g)?

a) 48 mL

b) 53 mL

c) 86 mL

d) 23 mL

e) 97 mL

13. 50 mL of 0.50 M Na2SO4 is diluted to 5.00 L with water. Calculate the new concentration of the solution.

a) 5.0 X 10-3 M

b) 0.50 M

c) 5.0 X 103 M

d) 1.00 M

e) 5.0 M


Sample Chemistry 050 Final Exam - 1988