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When the following equation is balanced,the coefficient of sulfur dioxide is ________. PbS (s) + O2 (g) → PbO (s) + SO2 (g)
Containment
A strategic policy aimed at preventing the expansion of an adversary's influence or ideology, often used in the context of the Cold War.
Cold War
A period of geopolitical tension between the Soviet Union and the United States and their respective allies, which lasted from the end of World War II until the dissolution of the Soviet Union in 1991.
Monroe Doctrine
A principle of US foreign policy that opposed European colonialism in the Americas and stated that any intervention by external powers in the politics of the Americas is a potentially hostile act against the US.
Western Hemisphere
The Western Hemisphere encompasses all territories located west of the Prime Meridian to the International Date Line, including both the Americas and surrounding waters.
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