Moles ↔ Molecules Calculator
Gas Volume Calculator (STP)
Mole Conversion Formulas
Key Relationships:
n = m/M (moles = mass/molar mass)
N = n × N_A (molecules = moles × Avogadro's number)
V = n × 22.4 L (volume at STP = moles × 22.4 L/mol)
N_A = 6.022 × 10²³ molecules/mol
Constants Used:
Avogadro's Number: 6.022 × 10²³ molecules/mol
Molar Volume at STP: 22.4 L/mol
STP Conditions: 0°C (273.15 K), 1 atm pressure