Organic chemistry Calculators

Carbon Dating Calculator Carbon-14 halves every 5,730 years, which runs out of signal past about ten half-lives. Chemical Oxygen Demand Calculator Glucose sets the reference at 1.07 g of oxygen per gram; hydrocarbons demand far more. Combustion Analysis Calculator Carbon from the CO2, hydrogen from the water, oxygen from whatever mass is left over. Combustion Reaction Calculator Complete combustion needs C + H/4 - O/2 moles of oxygen, and the fuel's own oxygen counts. Crude Protein Calculator Kjeldahl measures nitrogen and assumes it came from protein — which is why melamine once passed as milk. Degree of Unsaturation Calculator Four is the signature of a benzene ring — three double bonds plus the ring itself. Double Bond Equivalent Calculator Every ring and every pi bond costs two hydrogens, and the count cannot tell the two apart.