Chemistry Calculators (Page 5)
Concentration, molar mass, reactions and more chemistry tools.
Beer–Lambert Law Calculator
Enter the molar absorptivity ε, path length b, and concentration c to compute absorbance via the Beer–Lambert law A = ε·b·c.
RMS Velocity Calculator
Enter the absolute temperature T and molar mass M; using v_rms = √(3RT/M) the tool instantly computes the root-mean-square speed of gas molecules.
Bohr Model Energy Level Calculator
Enter the nuclear charge Z and principal quantum number n to compute the energy level of a hydrogen-like atom's electron by the Bohr model Eₙ = −13.6·Z²/n² (eV).
Half-Life Calculator
Compute the remaining amount of a substance after a given time, or the elapsed time, from its half-life using N = N₀·(½)^(t/T½).
Mole Calculator
Compute the amount of substance (moles) from mass and molar mass using n = m / M.
Molecular Weight Calculator
Estimate the molecular weight from a simple chemical formula (e.g. H2O, CO2, NaCl) by summing atomic weights.
Ideal Gas Calculator
Solve for any unknown among pressure, volume, moles or temperature using the ideal gas law PV = nRT.