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.
The molecular weight of sodium chloride is approximately 58.5 grams per mole, so 58.5 grams of sodium chloride equals 1 mole. Since normal saline contains 9 grams of NaCl, the concentration is 9 grams per liter divided by 58.5 grams per mole, or 0.154 mole per liter.Since NaCl dissociates into two ions â sodium and chloride â 1 molar NaCl is 2 osmolar. Thus, NS contains 154 mEq /L of Na + and Cl â .smotic coefficient of NaCl is about 0.93; therefore 0.154 Ã 1000 Ã 2 Ã .93 = 286.44) Nonetheless, the osmolarity of normal saline is a close approximation to the osmolarity of NaCl in blood. One litre of 0.9% Saline contains: 1  154 mEq of sodium ion = 154 mmol/L. 2  154 mEq of chloride ion = 154 mmol/L.