Germans sunk a passenger boat and didn’t care. This really made Americans mad.
Answer:
E. All of these
Explanation:
I'm Pretty sure it's all.
yes reasoning why just ask google
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.
