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#### 450sam

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« on: May 03, 2009, 01:04:25 PM »
We did the basic lab many people do this one
we mix 10 mL of sodium Carbonate with 20 mL of calcium chloride
we filter out the precipitate calcium carbonate using a funnel and filter paper and then measure the mass of the filter paper with the precipitate
what could be two non-human sources of error and would it make the final concentration too high or too low. how would you improve to minimize this error
helpp would be GREATLY appreciated
getting a bit desperate heree!

NOT HUMAN ERRORS

#### sjb

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« Reply #1 on: May 03, 2009, 01:14:59 PM »
How do you define human error?

#### 450sam

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« Reply #2 on: May 03, 2009, 01:18:52 PM »
human errors assuming u did the experiment perfectly and the errors were caused by the experiment or some could be human errors as long as they are not intentional

#### JimJitsu

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« Reply #3 on: May 03, 2009, 07:26:03 PM »
temperature can be one. too cold or too hot can change the reaction rates

#### BeepoGirl

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