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Fatty Acid

In chemistry, especially biochemistry, a fatty acid is a carboxylic acid with a long unbranched aliphatic tail (chain), which is either saturated or unsaturated. Most naturally occurring fatty acids have a chain of an even number of carbon atoms, from 4 to 28. Fatty acids are usually derived from triglycerides or phospholipids. When they are not attached to other molecules, they are known as "free" fatty acids. Fatty acids are important sources of fuel because, metabolized, they yield large quantities of ATP. Many cell types can use either glucose or fatty acids for this purpose. In particular, heart and skeletal muscle prefer fatty acids. The brain cannot use fatty acids as a source of fuel; it relies on glucose or ketone bodies.

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Fayalite is the iron-rich end-member of the olivine solid-solution series. It can react with oxygen to produce magnetite and quartz: the three minerals together make up the "FMQ" oxygen buffer. The reaction is used to control the fugacity of oxygen in laboratory experiments. It can also be used to calculate the fugacity of oxygen recorded by mineral assemblages in metamorphic and igneous processes.

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Fermium is a synthetic element. It was discovered in the debris of the first hydrogen bomb explosion in 1952, and named after Nobel laureate Enrico Fermi, one of the pioneers of nuclear physics. There is no use for fermium outside of basic scientific research.

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Ferric Acetate

Ferric Acetate is the coordination compound more commonly known as basic iron acetate. It is a brownish red amorphous powder at room temperature. Ferric Acetate is insoluble in water, and soluble in ethanol.

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Ferric Chloride Hexahydrate

Ferric Chloride Hexahydrate used as catalyst in organic synthesis.

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