Exercises

EXERCISES, LESSON 2

INSTRUCTIONS: Answer the following exercises by writing the answer in the space

provided at the end of the question. After you have completed all the exercises, turn to

"Solutions to Exercises" at the end of the lesson and check your answers. For each

exercise answered incorrectly, reread the material referenced with the solution.

1. Which basic type of water is used for general laboratory procedures and has a

minimum 0.5 specific resistance of megohoms?

_____________________

2. Which solution is not homogenous throughout?

_____________________

3. What amount of Na2SO4 is needed to make 2000 mL of a 30.0solution?

_____________________

4. How many milligrams of NaCl are present in 5.0 mL of a 20.0 mg/dL NaCl

solution?

_____________________

5. How much HCl is needed to prepare 1.0 L of a 0.50 mL/dL HCl solution?

_____________________

6. How many mL of water must be added to 30.0 mL of toluene in order to prepare a

10.0 mL/dL toluene solution?

_____________________

MD0837

2-19