bronchial tree, an anatomic complex of the trachea and bronchi. The bronchi branch from the trachea. The right bronchus is wider and shorter than the left bronchus and branches into three secondary bronchi, one passing to each of the three lobes of the right lung.. an anatomical structure with branches resembling a tree. 2. in information science, a decision tree. bronchial tree. the trachea, bronchi and successive branching generations of the respiratory passages.
The molecular formula for Silicon is Si. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Silicon, or 28.0855 grams. Note that rounding errors may occur, so always check the results.Use this page to learn how to convert between moles Silicon and gram.he molecular formula for Silicon is Si. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Silicon, or 28.0855 grams. Note that rounding errors may occur, so always check the results.
Silicon is the eighth most common element in the universe by mass, but very rarely occurs as the pure free element in nature. It is most widely distributed in dusts, sands, planetoids, and planets as various forms of silicon dioxide (silica) or silicates.Over 90% of the Earth's crust is composed of silicate minerals, making silicon the second most abundant element in the Earth's crust (about 28% by mass) after oxygen.he isotopes of silicon range in mass number from 22 to 44. The most common decay mode of six isotopes with mass numbers lower than the most abundant stable isotope, silicon-28, is Î²+ , primarily forming aluminium isotopes (13 protons) as decay products.