Calculate the # of molecules in 4.0 mol h20

assuming that you are at standard temperature and pressure (0 celcius and 1 atm) u can use avogadro's number. which is 6.02x10^23 molecules.

so do (4.0 mol h20)/(6.02x10^23/ 1 mol)= 2.408 x 10^24 molecules

Please learn the symbols. Elements start with a capital Like H2O!!

One mole of any substance contains 6.022x10^23 particles, atoms ,molecules. This is called
Avogadro's Number. So 4.0 moles contains 4 times this number. Can you multiply by 4?

2.40800x 10^24 (<- 10 to the 24th power)

4 moles h2O * (6.022*10^23molecules/1mole H2O) = 2.41*10^24

4 multiplied 6.023 multiplied 10 rasto -23