Question

Number of molecules in 6.0×10⁻6 mol CH3CH2OH.

a) 1.8 × 10²0
b) 3.6 × 10²3
c) 3.6 × 10²0
d) 1.8 × 10²3

Answer 1

The number of molecules in 6.0×10⁻⁶ mol CH3CH2OH is 3.6 × 10²⁰ molecules.

Step-by-step explanation:

The number of molecules in 6.0×10⁻⁶ mol CH3CH2OH can be calculated using Avogadro's number. Avogadro's number is 6.022 × 10²³ molecules/mol.

In this case, we have 6.0×10⁻⁶ mol of CH3CH2OH. Multiplying this by Avogadro's number, we get:

6.0×10⁻⁶ mol × 6.022 × 10²³ molecules/mol = 3.6 × 10¹⁸ molecules

So, the correct answer is option c) 3.6 × 10²⁰ molecules.