Question

The density of a liquid is 1.2 g/mL. There are 35 drops in 2 mL. The number of molecules in one drop(molar mass of liquid = 70 g/mol) is :1.2NA(4) 1.2NA351.235(3512 NA​

Answer 1

Answer:

Correct option is C

Explanation:

Volume of one drop = 2/35 ml

Moles in one drop = 2×1.2/35×70

=1.2/(35)² mol

Number of molecules in one drop = 1.2/(35)² × NA