Question

If 1 ml =20 drop of water...
1 drop of water has_____no.of h2o molecules...find urgent plz

Answer 1

In stp or ntp, 1 mol h2o = 22.4 L h2o.
1 drop of h2o = 1/20 ml h2o=1/20×22.4mol h2o.
1 mol h2o has 6.022 ×10^23 no of h20 molecules.
then, 1 drop of water had 6.022 ×10^23/20×22.4 no. of h2o
=3.011 × 10^22/22.4 no. of h2o.