Question

One mole of any substance contains :

• A. 6.022 x10^22
• B. 6.022 x10^23
• C. 3.011x 10^23
• D. 1.204 x 10^24

Answer 1

Answer:

B. 6.022 x10^23

• A mole is the fundamental SI unit used in chemistry to measure the amount of a substance. It serves as a bridge between the microscopic world of atoms and molecules and the macroscopic world of grams and kilograms.

• One mole of any pure substance always contains the same number of constituent particles, whether they are atoms, molecules, ions, or electrons.

Avogadro's Constant

• The number of particles in one mole is defined as Avogadro's number (or Avogadro's constant), denoted as N_A.

• The value of Avogadro's constant is approximately 6.02214076 × 10²³ mol^-1.

• This constant was named in honor of the Italian scientist Amedeo Avogadro, though he did not determine the number himself.