Chemistry

Concentration from absorbance

M₁V₁ = M₂V₂ — work out a solution dilution · 3 curricula

From percent composition to formula

ΔG = ΔH − TΔS — solve and check spontaneity · 3 curricula

Buffer pH from pKa and the base/acid ratio

PV = nRT — solve for pressure, volume, moles or temperature · 3 curricula

Solve for pressure, volume, moles or temperature

118 elements, names in your curriculum language · 7 curricula

Parse a chemical formula, sum the atomic masses · 7 curricula

Molarity from mass, and dilution volumes

M = n/V — solve for molarity, moles, volume or mass · 7 curricula

Moles ↔ particles ↔ mass · 3 curricula

E = E° − (RT/nF) ln Q — cell potential at non-standard conditions

pH ↔ pOH ↔ [H⁺] ↔ [OH⁻] — convert any one · 7 curricula

Volume + chemistry in one tool

Limiting reagent, theoretical + percent yield