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meta-Chloroperoxybenzoic acid (mCPBA or mCPBA) is a peroxycarboxylic acid. It is a white solid often used widely as an oxidant in organic synthesis. mCPBA is often preferred to other peroxy acids because of its relative ease of handling. [1] mCPBA is a strong oxidizing agent that may cause fire upon contact with flammable material. [2]
Aerial view of Phase II of the McCook Reservoir under construction in 2023. The Tunnel and Reservoir Plan (abbreviated TARP and more commonly known as the Deep Tunnel Project or the Chicago Deep Tunnel) is a large civil engineering project that aims to reduce flooding in the metropolitan Chicago area, and to reduce the harmful effects of flushing raw sewage into Lake Michigan by diverting ...
Module:Location map/data/United States Chicago metropolitan area is a location map definition used to overlay markers and labels on an equirectangular projection map of Chicago metropolitan area. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.
Generally speaking, the mayor and city departments comprise the executive branch of the city government, and the city council comprises the legislative branch. [3] However, the mayor does have some formal legislative functions such as being the presiding officer of the council and being able to break tie votes, and informally has dominated legislative activity since the late 19th century.
A map of the 77 community areas, broken down by purported regions. While the areas have official use and definition, the color groupings are unofficial, and such "regions" may be defined differently, grouped differently, or not be used at all. The city of Chicago is divided into 77 community areas for statistical and planning purposes.
The Chicago MSA, now defined by the U.S. Office of Management and Budget (OMB) as the Chicago–Naperville–Elgin, IL–IN–WI Metropolitan Statistical Area, is the third-largest MSA by population in the United States. The 2022 census estimate for the population of the MSA was 9,441,957.
By the mid-1890s, the ward's partisan lean had firmly become Democratic. [1] The last Republican to represent the ward on the Chicago City Council was Francis P. Gleason , who left office in 1897. In the 1940s, the ward was referred to as being the "wealthiest ward in the world".
The Chicago region's rail infrastructure was largely configured to serve transportation needs and demands at the time it was originally built more than a century ago. By the 1990s, many decades of modernization and consolidation within the freight and passenger railroad industries had drastically changed the operational demands being placed on ...