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"Molecules are microscopic in size, so it is pretty hard to guess how many are in a grain of salt. One grain is probably made up of millions of molecules."

^ I am sorry someone hated you enough to ignore over 100 years of crystallography, chemistry and physics knowledge advancements to give you that crappy cop out answer

Depending on the average size of a tiny salt grain, there can be between to .3 to 2 quintillion salt molecules in a grain of sodium chloride salt. Quintillion = 10^18, or one billion times one billion.

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10y ago

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