Question

How many individual C_60 fullerene molecules are in 1.5 uL of a 10-M solution toluene? antenn traveling at 10.000 m/s.

Answer 1

9.0345 × 10¹⁸

Step-by-step explanation:

Given:

Volume = 1.5 μL = 1.5 x 10⁻⁶ L

Molarity = 10 M

Now,

Number of moles = Molarity × volume

on substituting the values, we get

Number of moles = 10 × 1.5 x 10⁻⁶

or

Number of moles = 1.5 x 10⁻⁵

Also,

1 mole contains 6.023 × 10²³ molecules

therefore,

1.5 x 10⁻⁵ moles will contain = 6.023 x 10²³ × 1.5 × 10⁻⁵ = 9.0345 × 10¹⁸

Hence,

The number of C₆₀ molecules present are 9.0345 × 10¹⁸