Six astronauts are still on the space station as part of a planned year-long stay in space, the longest tour of duty in the station's 15-year history.
The molecular formula of citric acid is C 6 H 8 O 7. The chemical formula for citric acid is best shown by a diagram of its complete structural formula. This shows how the atoms are arranged in the molecule. Citric acid has three carboxyl or-COOH groups and is triprotic in nature.
Description. Sodium Citrate, Dihydrate, a conjugate base of a weak acid, can perform as a biological buffering agent because it resists changes in pH.Citric acid is one of a series of compounds responsible for the physiological oxidation of fats, carbohydrates and proteins to carbon dioxide and water.Sodium Citrate, Dihydrate is often used to prepare sodium citrate buffer for antigen retrieval of tissue samples.odium Citrate, Dihydrate, a conjugate base of a weak acid, can perform as a biological buffering agent because it resists changes in pH.