alleryStart learning →What is the conveniently rounded value of Avogadro's number?
A6.022 x 10^22 per mol
B6.022 x 10^23 per mol
C6.022 x 10^24 per mol
D6.022 x 10^21 per mol
Answer & Solution
Correct answer: B. 6.022 x 10^23 per mol
1. The number of entities in one mole has been determined experimentally.
2. The measured value is 6.02214179 x 10^23 entities per mole.
3. Rounded for everyday use, this is 6.022 x 10^23 per mol.
4. The unit per mole is part of the constant, so the exponent 23 is what distinguishes it from the other options.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 3 "Composition of Substances and Solutions", section 3.1 Formula Mass and the Mole Concept_
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