Examlex
A quantity of mercury occupies 400.0 cm3 at 0°C.What volume will it occupy when heated to 50°C? Mercury has a volume expansion coefficient of 180 × 10-6 K-1.
Foreign Affairs
Matters relating to the relationships between countries, including diplomacy, trade, and security issues.
Frederick C. Howe
An influential American sociologist, political reformer, and public administrator known for his work in urban reform and sociology in the early 20th century.
Progressive Era
A period of widespread social activism and political reform in the United States from the 1890s to the 1920s, aiming to address issues stemming from industrialization, urbanization, and corruption.
Challenge
A task or situation that tests someone's abilities, often requiring effort to overcome.
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