Avogadro's Number Calculator

Avogadro's Number Calculator

Avogadro's Number Calculator
Result

Avogadro's Number Calculator

This calculator helps you convert between the number of particles (atoms, molecules, ions) and moles using Avogadro's number.

How to Use This Calculator

  1. Enter the amount of substance in the input field
  2. Select whether you're entering moles or particles
  3. Click the "Calculate" button
  4. View the converted result in the output section

What is Avogadro's Number?

Avogadro's number (6.022 × 10²³) is the number of particles (atoms, molecules, ions, etc.) in one mole of a substance. It's a fundamental constant in chemistry that bridges the atomic and macroscopic scales.

Formula:
Number of particles = Number of moles × Avogadro's number
N = n × NA

Where:
N = Number of particles
n = Number of moles
NA = Avogadro's number (6.022 × 10²³ mol⁻¹)
Example Calculation

Problem: How many atoms are in 2.5 moles of gold?

Solution:

Using the formula N = n × NA

N = 2.5 mol × 6.022 × 10²³ atoms/mol

N = 1.5055 × 10²⁴ atoms

So, 2.5 moles of gold contains approximately 1.5055 × 10²⁴ gold atoms.