Acrylic fibers are synthetic fibers made from a polymer (polyacrylonitrile) with an average molecular weight of ~100,000, about 1900 monomer units. To be called acrylic in the U.S, the polymer must contain at least 85% acrylonitrile monomer. Typical comonomers are vinyl acetate or methyl acrylate.
The 3rd Congressional District in the Commonwealth of Virginia includes all of the independent cities of Petersburg and Portsmouth, parts of the independent cities of Hampton, Newport News, Norfolk and Richmond, all of the Counties of Charles City and Surry, and parts of the Counties of Henrico and Prince George.
Some of the cities in the Hampton Roads area (Virginia Beach, Chesapeake, Newport News, Hampton, and Suffolk) were formed from an entire county. These cities are no longer county seats, since the counties ceased to exist once the cities were completely formed, but are functionally equivalent to counties.