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Phosphorus trichloride can be made by the following reaction: P4(s) + 6Cl2(g) 4PCl3(l) What is the maximum amount of phosphorus trichloride that can be formed if 15 molecules of P4 are mixed with 42 molecules of chlorine?
Johnson-Reed Act
A U.S. federal law enacted in 1924 that established quotas limiting the number of immigrants allowed from each country, effectively restricting non-European immigration.
National Quotas
Limits set by governments on the number of immigrants from specific countries allowed to enter the country over a set timeframe, historically based on ethnic or national origin criteria.
U.S. Racial Order
The historical and systemic arrangement of racial and ethnic groups in the United States, often associated with hierarchy and social stratification.
Symbolic Categories
Classifications made based on symbols or ideas that represent specific attributes or qualities, often used in the construction of social identities.
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