The answer is 1.537×10^25 molecules.
This question requires the use of avogadro’s number, which represents the number of formula units (could be atoms or molecules) in a mole. Avogadro’s number is 6.02214076×10^23 per mole. The first step is to determine how many moles of water is 460 grams of H2O. The molar mass of H2O is 18.02 grams per mole, and by dividing 460 grams of H2O by 18.02 grams per mole, you find that there’s are 25.53 moles of H2O present. We know from Avogadro’s number that there are 6.02214076×10^23 molecules per mole, so we multiply 25.53 by 6.02214076×10^23, which results in about 1.537×10^25 molecules.
