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First logo used from 2010 to 2017. The 2b2t Minecraft server was founded in December 2010; it has run consistently without a reset since then. [6] [1] The founders are anonymous, [7] choosing to remain unknown or known only via usernames; the most prominent founder is commonly referred to as "Hausemaster".
Rubidium Rb Rb + Potassium K K + Sodium Na Na + Lithium Li Li + Barium Ba Ba 2+ Strontium Sr Sr 2+ Calcium Ca Ca 2+ Magnesium Mg Mg 2+ reacts very slowly with cold water, but rapidly in boiling water, and very vigorously with acids: Beryllium Be Be 2+ reacts with acids and steam Aluminium Al Al 3+ Titanium Ti Ti 4+ reacts with concentrated ...
rubidium-87: 49.72 1.569 lanthanum-138: 102.1 3.22 samarium-147: 106.1 3.35 platinum-190: 483 15.2 10 21 seconds (zettaseconds) isotope half-life 10 12 years 10 21 ...
Methyl methacrylate "synthetic resin" for casting (simply the bulk liquid chemical) may be used in conjunction with a polymerization catalyst such as methyl ethyl ketone peroxide (MEKP), to produce hardened transparent PMMA in any shape, from a mold. Objects like insects or coins, or even dangerous chemicals in breakable quartz ampules, may be ...
A further 10 nuclides, platinum-190, samarium-147, lanthanum-138, rubidium-87, rhenium-187, lutetium-176, thorium-232, uranium-238, potassium-40, and uranium-235 have half-lives between 7.0 × 10 8 and 4.83 × 10 11 years, which means they have experienced at least 0.5% depletion since the formation of the Solar System about 4.6 × 10 9 years ...
Tetrakis(triphenylphosphine)palladium(0) (sometimes called quatrotriphenylphosphine palladium) is the chemical compound [Pd(P(C 6 H 5) 3) 4], often abbreviated Pd(PPh 3) 4, or rarely PdP 4. It is a bright yellow crystalline solid that becomes brown upon decomposition in air .
The most common regeneration process is the pyrohydrolysis process, applying the following formula: [25] 4 FeCl 2 + 4 H 2 O + O 2 → 8 HCl + 2 Fe 2 O 3. By recuperation of the spent acid, a closed acid loop is established. [7] The iron(III) oxide by-product of the regeneration process is valuable, used in a variety of secondary industries. [25]
Aluminium acetate or aluminium ethanoate [1] (also "aluminum ~"), sometimes abbreviated AlAc in geochemistry, [2] can refer to a number of different salts of aluminium with acetic acid. In the solid state, three salts exist under this name: basic aluminium monoacetate , (HO) 2 AlCH 3 CO 2 , basic aluminium diacetate , HOAl(CH 3 CO 2 ) 2 , [ 3 ...