(free active chlorine)
81Greenpeace — Infobox Non profit Non profit name = Greenpeace Non profit founded date = 1971, Vancouver, BC, Canada location = Amsterdam, Netherlands (Greenpeace International) area served = Global focus = Energy, Transport, Urbanism method = Nonviolence,… …
82Acid dissociation constant — Acetic acid, a weak acid, donates a proton (hydrogen ion, high …
83Iron — Fe redirects here. For other uses, see Fe (disambiguation). This article is about the chemical element. For other uses, see Iron (disambiguation). manganese …
84sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …
85Catalysis — Catalyst redirects here. For other uses, see Catalyst (disambiguation). Solid heterogeneous catalysts such as in automobile catalytic converters are plated on structures designed to maximize their surface area …
86Iridium — (pronEng|ɪˈrɪdiəm) is a chemical element that has the symbol Ir and atomic number 77. A very hard, brittle, silvery white transition metal of the platinum family, iridium is the second densest element and is the most corrosion resistant metal,… …
87Pyridine — Pyridine …
88Sun — This article is about the star. For other uses, see Sun (disambiguation). The Sun …
89Samarium — promethium ← samarium → europium ↑ Sm ↓ …
90Activated carbon — Activated carbon, also called activated charcoal, activated coal or carbo activatus, is a form of carbon that has been processed to make it extremely porous and thus to have a very large surface area available for adsorption or chemical reactions …
