an anatomic structure with branches resembling a tree. bronchial tree the bronchi and their branching structures; see color plates. tracheobronchial tree the trachea, bronchi, and their branching structures; see color plates.. 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.
If we make the balanced equation between al giving al2o3, The number of aluminum atoms is two and the number of oxygen atoms is three. As we know the atomic masses of aluminum as 26.9815386 grams per mole and oxygen as 16.9994 grams per mole. Multiplying the number of atoms of each of these elements by its respective atomic weight and then adding them, the molecular weight of Al2O3 is 101.961276 grams per mole.
Strange. Oh, I know -- a cubic foot of aluminum is 168 1/2 lbs, not 62 lbs. But anyway, there are indeed differences in density among different alloys of aluminum, but in general the differences amount to less than 1/2 of 1% of specific gravity.ating Newest Oldest. Best Answer: Like Denis said, Aluminum's density is .0975437 lbs / cubic inch. 1 square foot of 1/4 material is 36 cubic inches 36 x .0975437 = 3.5115732 lbs.