Major underestimate, it's more like 1.8 * 10^24 or, if you prefer, 1.8 million billion billion.... See: https://www.wolframalpha.com/input/?i=atoms+in+a+18+gra

Major underestimate, it's more like 1.8 * 10^24 or, if you prefer, 1.8 million billion billion.... See: https://www.wolframalpha.com/input/?i=atoms+in+a+18+grams+of+water https://www.wolframalpha.com/input/?i=atoms+in+a+18+grams+of...