March 08, 2021, 01:56:22 AM
Forum Rules: Read This Before Posting


Topic: CHEMISTRY LAB!!!!!!!! PLEASE HELP NOW!  (Read 33531 times)

0 Members and 1 Guest are viewing this topic.

Offline 450sam

  • Very New Member
  • *
  • Posts: 2
  • Mole Snacks: +0/-0
CHEMISTRY LAB!!!!!!!! PLEASE HELP NOW!
« 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

Offline sjb

  • Global Moderator
  • Sr. Member
  • ***
  • Posts: 3522
  • Mole Snacks: +218/-42
  • Gender: Male
Re: CHEMISTRY LAB!!!!!!!! PLEASE HELP NOW!
« Reply #1 on: May 03, 2009, 01:14:59 PM »
How do you define human error?

Offline 450sam

  • Very New Member
  • *
  • Posts: 2
  • Mole Snacks: +0/-0
Re: CHEMISTRY LAB!!!!!!!! PLEASE HELP NOW!
« 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

Offline JimJitsu

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +1/-1
Re: CHEMISTRY LAB!!!!!!!! PLEASE HELP NOW!
« Reply #3 on: May 03, 2009, 07:26:03 PM »
temperature can be one. too cold or too hot can change the reaction rates

Offline BeepoGirl

  • Regular Member
  • ***
  • Posts: 26
  • Mole Snacks: +0/-1
  • Gender: Female
Re: CHEMISTRY LAB!!!!!!!! PLEASE HELP NOW!
« Reply #4 on: May 04, 2009, 08:17:23 AM »
Measurement error, inaccuracies in the equipment used to measure the liquids and the mass at the end. Improve it by repeating the experiment several times or by using equipment which measures more accurately.

Sponsored Links