I am slightly intoxicated and need to do this work so bare with me please... an

Question

I am slightly intoxicated and need to do this work so bare with me please...

an analyst wants to analyze spectrophotometrically the copper content in a bronze sample. if the sample weights about 5 g and if the absorbance (A) is to be read to the nearest 0.001 absorbance unit, how accurately should the sample be weighed? Assume the volume of the measured solution will be adjusted to botain minimum error in absorbance that is so that 0.1 <A<1.

Also: side peice of info not given in problem, the absorbance is linearly proportional to the sample weight.

( should it simply be 0.001???)

Explanation / Answer

Yes, you're correct, the sample's mass should be measured to the nearest thousandth. (0.001)

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