Homework Help: Chemistry

Posted by George on Thursday, April 28, 2011 at 7:37am.

Here's is what I did:

Collect water samples from Farm Lane bridge (500 mL minimum)þ
Filter water samples using small mesh filter
Note: Weigh the dried filter before filtration!
Dry the filter in drying oven (~24 hours)þ
Weigh the filter after drying.

Day Initial Weight Final Weight
4-Apr 0.122 0.12
5-Apr 0.122 0.12
6-Apr 0.12 0.12
11-Apr 0.122 0.121
12-Apr 0.12 0.123
13-Apr 0.12 0.123
18-Apr 0.122 0.123
20-Apr 0.122 0.122
25-Apr 0.122 0.121

Do I measure turbidity using a before and after measurment of my water samples?

Chemistry - Dr Russ, Thursday, April 28, 2011 at 8:23am
Normally you measure the turbidity before sampling.

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