Moldavia

N. part of Roumania; once a principality. angle, or member, into projecting or receding profiles, either Molding. In Architecture, modeling of any surface, IMG:content-1407.jpg:[merged small][graphic][merged small] m(-1) δ , in IMG:content-1408.png:[graphic] IMG:content-1409.png:[merged small][merged small][graphic][subsumed] metal, occurring in nature as MOLYBDENITE (q.v.); very hard, and more infusible than platinum. Heated in the air it forms molybdenum trioxide. It is soluble in concentrated sulphuric and nitric acids. It forms three cla es of salts, of the general formulæ MoX, MOX, and MoX,; also derivatives in which it is pentavalent and trivalent. Some of its compounds find use in analytical chemistry. See WULFENITE and AMMONIUM PHOSPHO-MOLYBDATE.