Question

The number of water molecules present in a drop of water 0.06 grm

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 determined contains 0.002775 moles: molecules in a drop of water = (6.022 x 1023 molecules/mole) x 0.002275 moles.

Answer 2

ANSWER

1 mole of water = 6.022 x 1023 molecules of water

Gram molecular mass of water = 2 + 16 = 18 grams

i.e. 18 g of water contains = 6.022 x 1023 molecules

= 2.007 x 1021 molecules

=2049.147 molecule