section review 7

3. Which concentration expression is common for solutions used for practical purposes in the home, in industry, and in medicine? (a) percent concentration by mass (b) molarity (c) molality (d) all of the above are used equally

(a) percent concentration by mass

2. The symbol m stands for: (a) volume (b) molality (c) percent concentration by mass (d) molarity

(b) molality

Which concentration expression is most often used in chemistry? (a) percent concentration by mass (b) molarity (c) molality (d) all of the above are used equally

(b) molarity

Which of the following is expressed in terms of solution volume?

(b) molarity

11. What is the molarity of a solution that contains 0.202 mol KCl in 7.98L solution?

.025

9. How many moles of HCl are present in 0.70L of a 0.33M solution of HCl?

.23

6. What is the molarity of a solution that contains 125g NaCl in 4.00L solution?

.53 moler

5. A solution that contains a low concentration of solute must be: (a) unsaturated and dilute (b) saturated and dilute (c) dilute, but may be saturated or unsaturated (d) saturated, but may be dilute or concentrated.

c) dilute, but may be saturated or unsaturated

13. mol solute L solution

density

14. mol solute kg solvent

molarity

15. g solute x 100 g solution

volume