Let’s say I have a class A 25ml pipet with an uncertainty of +/- 0.24ml.(adsbygoogle = window.adsbygoogle || []).push({});

If I want to express the volume of the pipet to the correct number of sig figs to say determine the sig figs in a final answer - what is it?

Is it 25 ie two, because that is the marking?

Or 25.00 ie four, because the uncertainty limits the range to 24.76 – 25.24, which are 4 sig fig values?

Or 25.0 ie three, being 0.24 rounded down to the nearest single sig fig?

Thanks!

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# Significant figures and uncertainty

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