Weigh a clean 50 mL erlenmeyer
flask and rubber stopper.
Measure about 10 mL of distilled water with a 10 mL graduated
cylinder. Record the volume accurately with the proper number of significant
figures.
Transfer the water into the erlenmeyer flask. Stopper
the flask to prevent losses due to evaporation.
Weigh the flask, water and stopper.
Repeat the above steps 1 to 4 for ethanol and hexane.
Avoid inhaling hexane vapor. It is toxic. Pour the hexane into the waste container
provided when you are finished.