Question

a rain drop of water have how many molecules

Answer 1

Avogadro's number tells us there are 6.022 x 1023 molecules ofwater per mole of water. So, next we calculate how many molecules there are in a drop of water, which we determinedcontains 0.002775 moles:molecules in a drop of water = (6.022 x 1023 molecules/mole) x 0.002275 moles.

Answer 2

1.67× 10 power 21 molecules