The amygdala is an almond-shaped structure deep in the brain that is believed to be a communications hub between the parts of the brain that process incoming sensory signals and the parts that interpret these signals. It can alert the rest of the brain that a threat is present and trigger a fear or anxiety response. The emotional memories stored in the central part of the amygdala may play a role in anxiety disorders involving very distinct fears, such as fears of dogs, spiders, or flying.
Chemical formula for vinegar. Vinegar is composed of about 5% acetic acid. This is the major chemical component of vinegar. The systematic or proper chemical name of acetic acid is ethanoic acid. Vinegar is a weak acid produced by the oxidation of alcohol (ethanol) from wines and ciders by bacteria. It has a pleasant sour taste and is used in cooking or as a condiment.
Vinegar is a naturally-occurring liquid that contains many chemicals. It is approximately 5-20% acetic acid in water. So, there are actually two main chemical formulas involved. The molecular formula for water is H2O. The structural formula for acetic acid is CH3COOH. Vinegar is considered a type of weak acid. The other chemicals in vinegar depend on its source. Vinegar is made from the fermentation of ethanol (grain alcohol) by bacteria from the family Acetobacteraceae. Many types of vinegar include added flavorings, such as sugar, malt, or caramel. Apple cider vinegar is made from fermented apple juice, beer cider from beer, cane vinegar from sugar cane, and balsamic vinegar comes from white Trebbiano grapes with a final step of storage in special wooden casks. Many other types of vinegar are available. Distilled vinegar isn't actually distilled.