Question

The SI unit of Avogadro's constant is:
1. mol
2. gram
3. pascal
4. none of the above

Answer 1

Correct Answer - Option 4 : none of the above

The correct answer is option 4) i.e. none of the above

CONCEPT:

• Avogadro's number: The number of units present in one mole of a given substance is called the Avogadro's number.
  • Avogadro's number (NA) is equal to 6.022140857 × 1023.
  • This number also called Avogadro's constant is equal to the number of atoms present in 12 grams of Carbon-12.
  • A mole is a fundamental unit of measure of the amount of a substance.
  • For atoms, the mass of Avogadro's number of particles is equal to their atomic mass in grams.
  • For molecules, the mass of Avogadro's number of particles is equal to their molecular mass in grams.

EXPLANATION:

• The Avogadro's constant is a number with a value of 6.022140857 × 10²³ and therefore, is dimensionless. 

• mol is the SI unit of the amount of substance.
• gram is a unit of mass.
• Pascal is the SI unit for pressure.