Avogadro's number is measured by determining the number of atoms in exactly 0.012 kg of carbon 12. As you might imagine, it is very difficult to count individual atoms, so there is necessarily some error in the reported value. Other sources of error are contaminants in the carbon 12 and the difficulty of measuring exactly 0.012 kg. The reported value is 6.0221367 x 1023. The "true" value probably lies between 6.0221295 x 1023 and 6.0221439 x 1023. (There is only one chance in twenty that the true value would be outside this range.) What is the fractional uncertainty and percentage uncertainty in the reported value of Avogadro's number?

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Write the range of Avogadros number N A 60221295 10 23 to 602214... View the full answer