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Element A exists in three isotopic forms with masses of 21.0, 25.0 and 26.0 amu, respectively. Element Q also exists in three isotopic forms with masses of 20, 24.0 and 25.0 amu, respectively. It is true that:
Working-Class
A social group consisting of people employed in lower-tier jobs, often involving manual labor and receiving hourly wages.
African American/Black
Pertains to individuals in the United States with origins in any of the black racial groups of Africa.
White Middle-Class
A socioeconomic group characterized by moderate to high income, cultural norms, and educational levels, predominantly of white ethnicity in Western contexts.
Latina
A woman of Latin American origin or descent, often used in the United States to refer to women from Central and South America, as well as the Caribbean.
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