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:
Harvesting wild rice in the fall
Explanation:
18 or atleast 17.5 years old
The Portuguese traders António da mota and Fransisco Zeimoto
