Encyclopaedia Britannica states that there are 602,000,000,000,000,000,000,000, or 602 followed by 21 zeroes, atoms in a mole. This number is read aloud as "602 sextillion" and is a reference to Avogadro's number, which is commonly expressed in scientific notation as 6.02 multiplied by 10 to the 23rd power.
Continue ReadingA mole contains the same number of units by definition, which is regardless of the substance. A mole is also related to atomic weight or mass. For example, one mole of carbon-12 atoms has an atomic weight of 12 grams, while a mole of oxygen, which also contains Avogadro's number of units, has an atomic weight of 16 grams.
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