Practice Exam questions
Instructions: This is designed to help you prepare for your upcoming test. Answer all
questions. Show all work for calculations. Assume all multiple-choice questions have one
best answer unless otherwise stated.
Multiple Choice (10 questions)
1. Which of the following units indicates solution concentration by itself?
a) mL
b) M
c) g
d) mol
2. How many micrograms are in 0.5 mg?
a) 5 µg
b) 50 µg
c) 500 µg
d) 5000 µg
3. A 2 M solution is equivalent to which of the following?
a) 200 mM
b) 0.002 mM
c) 2000 mM
d) 20 mM
4. If 1.5 mol of solute is dissolved in 0.75 L, what is the molarity?
a) 0.5 M
b) 1 M
c) 2 M
d) 3 M
5. How many moles are present in 250 mL of a 0.5 M NaCl solution?
a) 0.125 mol
b) 2 mol
c) 125 mol
d) 0.02 mol
6. Which concentration is equivalent to 50 µM?
a) 0.05 mM
b) 5 mM
