Reactions. 1  Copper metal dissolves in nitric acid (HNO 3). 2  Actually, the nitrate ion oxidizes the copper metal to copper (II) ion while itself being transformed to NO 2 gas in the process; the copper (II) ion then binds to six water molecules.
Elaine C. Duke Sworn In As Deputy Secretary For The Department Of Homeland Security. Elaine C. Duke was sworn in today as the seventh Deputy Secretary of the Department of Homeland Security, following her confirmation by the U.S. Senate. In this capacity, she will serve as the chief operating officer for the Department.
Phone (202) 282â8000. JEH CHARLES JOHNSON, Secretary of Homeland Security was sworn in on December. 23, 2013 as the fourth Secretary of Homeland Security. Prior to joining DHS, Secretary. Johnson served as General Counsel for the Department of Defense, where he was part of. the senior management team and led the more than 10,000 military and civilian lawyers. across the Department. As General Counsel of the Defense Department, Secretary Johnson.