happimolekyylien
Happimolekyylien refers to oxygen molecules. An oxygen molecule, with the chemical formula O₂, consists of two oxygen atoms joined by a double covalent bond. This diatomic molecule is essential for life on Earth, as it is a key component of respiration for most living organisms, enabling them to extract energy from food. In the atmosphere, oxygen makes up approximately 21% of the air. It is a colorless, odorless gas at standard temperature and pressure. Oxygen plays a vital role in combustion processes, supporting the burning of fuels. Industrially, oxygen is produced through cryogenic distillation of air or by electrolysis of water. It is used in various applications, including medical treatments, welding, and in rocket propellants. The presence of oxygen in the Earth's atmosphere is largely a result of photosynthesis carried out by plants and algae over millions of years. While crucial for aerobic life, in its pure form or in certain chemical reactions, oxygen can also be a strong oxidizing agent and can contribute to corrosion. The study of oxygen molecules and their properties falls under the domain of chemistry, specifically molecular physics and physical chemistry.