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.
As far as chemical reactions are concerned, vinegar is a dilute solution of acetic acid, so it has the same chemical formula as acetic acid. A molecule of acetic acid contains two carbon, four hydrogen and two oxygen atoms which is often written as CH3COOH to reflect it's actual molecular structure:or a typical commercial vinegar with a 5% acetic acid content, the density is about 1.01 grams per milliliter. Properties of Vinegar-Freezing Point of Vinegar. The freezing point of vinegar, like the pH and density, depends on how much acetic acid is present.