concentrated alum
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Chrome alum — Potassium chromium sulfate Preferred IUPAC name Chromium potassium sulfate[ … Wikipedia
aluminum — aluminic /al yeuh min ik/, adj. /euh looh meuh neuhm/, n. 1. Chem. a silver white metallic element, light in weight, ductile, malleable, and not readily corroded or tarnished, occurring combined in nature in igneous rock, shale, clay, and most… … Universalium
Caesium — xenon ← caesium → barium Rb ↑ Cs ↓ Fr … Wikipedia
Chromium — This article is about the chemical element. For other uses, see Chromium (disambiguation). vanadium ← chromium → manganese ↑ Cr ↓ Mo … Wikipedia
environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations … Universalium
Sulfuric acid — Sulfuric acid … Wikipedia
Nitric acid — Nitric acid … Wikipedia
Chomutov — Coordinates: 50°27′38.83″N 13°25′3.66″E / 50.4607861°N 13.4176833°E / 50.4607861; 13.4176833 … Wikipedia
Bronx High School of Science — Infobox Secondary school name = The Bronx High School of Science native name = motto = Every great advance in science has issued from a new audacity of imagination John Dewey established = 1938 founder = Morris Meister city = Bronx state = NY… … Wikipedia
Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… … Universalium
