Question

Q.3 Calculate the
number
in
of molecules in a
drop of
water weighing 0.048g?​

Answer 1

Answer:

molecular mass of water=18g

the number of moles of water=n=

weight

molecular wt.=

0.05 =2.78×10^-3

18

now number of molecules of water=n×6.022×10^23

=2.78×10^-3×6.022×10^23

=1.67×10^21 molecules