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.
1 Silicon is the eighth most abundant element in the Universe; it is made in stars with a mass of eight or more Earth suns. 2  Near the end of their lives these stars enter the carbon burning phase, adding helium nuclei to carbon to produce oxygen, neon, magnesium and silicon.mpurities in the silicon are about 1 part per billion or less. Isotopes: Silicon has 14 isotopes whose half-lives are known, with mass numbers 22 to 36. Naturally occurring silicon is a mixture of its three stable isotopes and they are found in the percentages shown: 28 Si (92.2%), 29 Si (4.7%) and 30 Si (3.1%).