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VerChem - World-class chemistry calculators and interactive tools

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VerChem

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⚗️ Professional Grade • 8 Calculation Modes

Stoichiometry
Calculator

Mole conversions, limiting reagents, and chemical calculations with step-by-step solutions

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Input Parameters

Chemical Formula

Examples: H₂O, C₆H₁₂O₆, Ca(OH)₂, Fe₂O₃

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Quick Reference

Important Constants

•Avogadro's Number: 6.022 × 10²³ particles/mol
•Molar Volume (STP): 22.4 L/mol
•STP: 0°C (273.15 K), 1 atm

Key Formulas

•n = m / M (moles = mass / molar mass)
•m = n × M (mass = moles × molar mass)
•N = n × Nₐ (particles = moles × Avogadro)
•M₁V₁ = M₂V₂ (dilution)

🔬 Open Periodic Table for Atomic Masses