The trachea and bronchi form the tracheobronchial tree. The trachea is situated between the lower end of the larynx and the center of the chest, where it splits into the two bronchi at a ridge called the carina.arly diagnosis is important to prevent complications, which include stenosis (narrowing) of the airway, respiratory tract infection, and damage to the lung tissue. Diagnosis involves procedures such as bronchoscopy, radiography, and x-ray computed tomography to visualize the tracheobronchial tree.
Avogadro's number is the number of atoms required to make 1 gram of molecular hydrogen (not including the heavier isotopes of hydrogen). Sodium has a standard atomic weight of 22.99 amu (atomic mass units). A mole of Sodium atoms would weigh 22.99 grams.
Compounds are also measured in moles. For example, the atomic weight of 1 M of salt or sodium chloride (NaCl) would equal the sum of the weight of its components.atomic weight of sodium (23 g) 1 atomic weight of chlorine (35.5 g) 5 58.5 gAs stated before, 1 mM is the molecular weight expressed in milligrams.Because 1 g equals 1000 mg, 1 M equals 1000 mM.hus salt is a sodium chloride compound consisting of both sodium (posi-tive electrical charge) and chloride (negative electrical charge).The valence of an element is a number that represents its capacity to combine to form a molecule of a stable compound. An element can exist in various forms.