#dc comics#batman#bruce wayne#dc#dick grayson#dc universe#tim drake#batfamily#batfam#dc fanart
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Significant features of the global cycle of copper are summarized in Fig. 13.7.
"Environmental Chemistry: A Global Perspective", 4e - Gary W. VanLoon & Stephen J. Duffy
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quartzo_roxo
Pirita - coleção particular
Inter-penetrating pyrite cubes
Quartz with Sphalerite and potentially Covellite
Locality: Unknown
Miargyrite - San José Mine, San José del Progreso, Oaxaca, Mexico
#stone #glass #sulfure #sulfur #sulfide #solid #design #decoration #mydesk #retrica @retrica_app @retricaapp
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Distillation of a quite interesting compound, an aryl-perfluoroalkyl disulfide.
Trifluoromethyl disulfides are important as precursors of biologically active trifluoromethyl thiosulfonates and important parts of molecules being developed for modern medicinal chemistry. Good point: I recently found a cheap and well scalable method for the preparation of this functional group.
http://thesilverforge.com/cleaning-silver/
Cleaning Silver
ansiedad.
