ATAR Notes: Forum

VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: Wizard on December 14, 2008, 06:56:29 pm

Title: Do we need to know...?
Post by: Wizard on December 14, 2008, 06:56:29 pm

Do we need to know the uncertainties of the instruments? (eg. the pipette and the burette?)

Out of curiosity, what is the uncertainty of a 25ml pipette?

Title: Re: Do we need to know...?
Post by: Collin Li on December 14, 2008, 07:09:26 pm

Nope. Not sure about the uncertainty of the instruments - they could vary depending on brand, perhaps?

Title: Re: Do we need to know...?
Post by: cara.mel on December 16, 2008, 10:49:41 pm

The uncertainty would be small btw. I think it would say so on the RL instrument (or the packaging it came in or something)
Maybe +/-0.05 or something off the top of my head, I remember seeing in questions aliquot - 20.00mL etc (given this was 1.5 years ago so I might be a bit fuzzy in memory department :P)

Title: Re: Do we need to know...?
Post by: gfb on December 16, 2008, 10:54:53 pm

Yep, +/- 0.05 for pipette, burette etc.