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A colourless, toxic gas with the characteristic odour of rotten eggs. It occurs in certain mineral waters and spring waters.
The second member in the homologous series of straight-chain alkanes.
A reddish-brown toxic gas, very reactive due to its unpaired electron.
The first member of the homologous series of alkyne hydrocarbons.
A colourless, heavier-than-air gas. Its geometric isomer is trans-2-butene.
One of the raw materials of traditional photography.
A compound ion formed when a phosphoric acid molecule releases a proton.
A liquid with a characteristic unpleasant odour and a low boiling point.
The third member in the homologous series of straight-chain alkanes.
Colourless, odourless gas used as a standard in NMR spectroscopy.
The first member in the homologous series of 1-alkenes.
The simplest peptide, formed from two glycine molecules by a peptide bond.
A colourless gas with a pungent odour. It is widely used in industry.
A triol that is often used as an ingredient of creams and ointments.
The best known alcohol, important in the food industry.
The compound of hydrogen and oxygen. Colourless, odourless liquid; heavier than water.
A basic heterocyclic organic compound; a colourless, pungent toxic liquid.
Colourless, heavier-than-air gas with a pungent odour. It forms white fumes in moist air.
The aim of this extraordinarily complex study was to mimic the different phases of the flight of birds.
Leonardo also designed a wide variety of artillery weapons.