The mole is defined as the “amount of substance which contains the same number of particles as there are atoms in 12 grams of carbon 12” which is referred to as “Avagadro’s Constant”. Avagadro’s Constant equates to 6.022140857 x 10^23 mol^-1 or 6.022 x 10 sextillion or 602,200,000,000,000,000,000,000. Avogadro’s Constant depends upon what 12 grams is, but alongside those 12 grams, it also depends upon what 1 kilogram is. On November 15, 2018, scientists from around the world met in Versailles, F...
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