Answer:
The poisoned substance was mixed with arsenic-free zinc and sulfuric acid, resulting in arsine gas.
The gas was later ignited and decomposed into pure metallic arsenic. This test was highly sensitive and could detect even one-fiftieth of a milligram of arsenic. It was a remarkable discovery, since before that, arsenic was widely used as poison in enormous amounts of murders, impossible to detect and trace.
Answer:
The Virginia Plan was a proposal to the United States Constitutional Convention for the creation of a supreme national government with three branches and a bicameral legislature. The plan was drafted by James Madison while he waited for a quorum to assemble at the Constitutional Convention of 1787.
Explanation:
Answer:
The prime meridian, or 0 degrees longitude, and the International Date Line, 180 degrees longitude, divide the Earth into Eastern and Western hemispheres. Many geographers consider the 20 degree west line of longitude and the 160 degree east line of longitude as the Eastern and Western hemispheres.
Ellis island was originally built and opened as an immigration station.
