How many molecules are in 2.00 moles of H2O?​

Answer:- There are 1.204 × 10^24 molecules in 2.00 moles of H2O.

Avogadro’s number is the number of molecules in one mole of a substance. It is equal to 6.022 × 10^23 molecules/mol. So, 2.00 moles of H2O contain 2 × 6.022 × 10^23 molecules = 1.204 × 10^24 molecules.