"Avogadro number"@en-us . . . "Avogadro's number"^^ . . . . . . "113585819"^^ . "0"^^ . "13585819-n"^^ . . "0"^^ . . "the number of molecules in a mole of a substance (approximately 602,250,000,000,000,000,000,000)"@en-us . "112820648"@en-us . "Avogadro's number"@en-us . .