What Is the Mole Calculator?
A mole (mol) is the SI unit for amount of substance: exactly 6.02214076 × 10²³ elementary entities.
How Does the Mole Calculator Work?
n = m/M for mass; n = N/Nₐ for particles; n = V/22.414 for ideal gas at STP.
Mole Calculator Formula & Variables
The core mathematical equation utilized by this calculator is expressed as:
Moles = mass / molar mass. Moles = particles / Avogadro. Moles = volume (L at STP) / 22.414.
How to Use the Mole Calculator
- Enter the molar mass and select your input type (mass, particles, or volume).
Step-by-Step Example Calculation
36g of water (M = 18.015 g/mol)
Input Values:
molarMass:18.015
mode:mass
mass:36
Worked Steps: n = 36 / 18.015 = 1.999 mol ≈ 2 moles.
Understanding Your Result
The output shows moles plus equivalent mass, particle count, and gas volume.
Factors That Affect the Result
- Only ideal gases follow n = V/22.414 exactly; real gases deviate at high pressure.
When Should You Use This Calculator?
- Stoichiometry, solution preparation, titration, gas-law calculations.
Assumptions & Limitations
- Volume calculation assumes ideal gas at 0°C and 1 atm.
Frequently Asked Questions
Calculation Accuracy & Reference Note
Avogadro constant: 6.02214076 × 10²³ mol⁻¹ (exact SI definition).