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A 0.4272 g sample of an element contains 2.241 × 1021 atoms.What is the symbol of the element?
David Walker
An African American abolitionist, writer, and anti-slavery activist in the 19th century, best known for his 1829 pamphlet "David Walker's Appeal," which called for black unity and self-help in the fight against oppression and injustice.
Angelina Grimkè
A 19th-century American abolitionist and suffragist known for her advocacy against slavery and for women's rights, part of the notable Grimké sister duo.
South
A term often used to refer to the southern part of a country or region, but in the context of the United States, typically associated with the states that seceded during the Civil War.
Newspaper Publishing
The activity of producing and distributing printed periodicals that contain news, information, and advertising on a regular basis, ranging from daily to weekly publications.
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