October 25, 2021, 04:06:41 AM
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Topic: volumetric measurement : significant figures  (Read 330 times)

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Offline xshadow

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volumetric measurement : significant figures
« on: April 08, 2021, 06:15:09 AM »
IF I have a 100,00ml flask with a ± 0,08 ml tolerance  and if I suppore I correctly bring to volume (100ml)  how I should write this measurement:

100,0ml
100,00ml


the uncertainty is on the second decimal figure speaking of "ml" ( +0,08ml)but don't understand why my slides says 100,0ml with 4   significant rules .


100,00000....0  + 0,08 --->  100,08ml
100,00000....0  - 0,08 ---->  99,92 ml


thanks

Offline Borek

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Re: volumetric measurement : significant figures
« Reply #1 on: April 08, 2021, 08:30:07 AM »
Can't you ignore significant figures and write 100.00±0.08?

sigfigs are just an approximation, they are better than nothing when you have no other data - but you have it in this case.
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