Structure and properties Aqua regia is a mixture of concentrated nitric acid (HNO3) with concentrated hydrochloric acid (HCl) in a ratio of 1:3. Application Aqua regia can dissolve the precious metals gold and platinum. This is not possible with pure nitric acid.
General information Seen from the outside, the stomach looks like a tube that has been dilated. It can let the food pass by the shortest way or store it for a while. If you look inside the stomach (gastroscopy), e.g. with the help of an endoscope, you can see a coarse folding of the mucous … Stomach mucosa
Definition The best-known representative of the aromatics is benzene (benzenes), which consists of six carbon atoms arranged in a ring with angles of 120°. Benzene is usually drawn like a cylcoalkene, each with three alternating single and double bonds. However, benzene and the other aromatics do not belong to the alkenes and behave chemically differently. … Aromatics
Products Acid regulators are available as pure substances in specialized stores, for example in pharmacies and drugstores. They are found in numerous foods as additives (with E numbers) and in medicines as excipients. Structure and properties Acidity regulators are organic and inorganic acids and bases. Some examples are listed below: Acids: Adipic acid Malic acid … Acid Regulators
Definition The term gastric juice is used to refer to the acidic liquid found in the stomach, which is very important for the digestion of any food constituents. A human body produces about 2 to 3 liters of gastric juice per day, depending on the amount. Frequency Amount of food intake and Food composition Composition … Gastric acid
Introduction The stomach (ventricle, gastrectum) is a tubular, muscular hollow organ that serves to store, crush and homogenize the ingested food. The capacity of the stomach in adults is usually between 1200 and 1600 ml, although the external shape of the stomach can vary greatly. Through the oesophagus, food mixed with saliva passes from the … Tasks of the stomach
The task of gastric acid In the fundus and corpus area of the stomach, the cells of the stomach mucosa secrete hydrochloric acid (HCl), which is the main component of gastric juice. Here, the hydrochloric acid reaches a concentration of up to 150 mM, which allows the pH value to drop locally to values below … The task of gastric acid | Tasks of the stomach
Tasks of the stomach mucosa The surface of the stomach mucosa is greatly enlarged by numerous crypts (stomach glands). Within these glands there are different types of cells which together produce the gastric juice. The so-called main cells are located at the base of the glands. These are basophilic cells with apical secretion granules containing … Tasks of the stomach mucosa | Tasks of the stomach
