Molecule Studio & Calculators — OChem Board Tools

Molecule library

Build a molecule to see its properties.

Export

Properties computed in your browser with RDKit. Drug-likeness rules are guidelines, not verdicts.

Chemistry calculators

The everyday math — balance equations, molar mass, mole conversions, dilutions, gas laws, pH.

Type an equation with → or =, e.g. C3H8 + O2 -> CO2 + H2O.

Handles parentheses and hydrates, e.g. Ca(OH)2, CuSO4·5H2O.

Formula

C₁V₁ = C₂V₂ — leave one box blank, it's solved.

C₁

V₁

C₂

V₂

PV = nRT — leave one box blank. R = 0.0821.

P (atm)

V (L)

n (mol)

T (K)

pH of a strong acid/base from its concentration (mol/L).

Concentration (M)

Type

Beer–Lambert A = ε·b·c — leave one box blank.

A (absorbance)

ε (M⁻¹cm⁻¹)

b (cm)

c (M)

OChem Board pairs these free tools with live 1-on-1 tutoring on a real-time chemistry whiteboard.