Answer to Question #220545 in Physical Chemistry for ruhi

Question

Q.2 Calculate the number of molecules in a drop of water weighing 0.05g(H=1, O=16).

Answer 1

Molar mass of H20 = 18

Number of Molecules $=\frac{6.022×10^{23} ×0.05}{18.0}=1.672×10^{21}$