Hi. Can anybody help me with crystals? I have a gas that makes blue crystals when it's been hold in low temperature and high pressure. If pressure becomes higher, it makes red crystals, if pressure becomes lower then it reurns to the blue color. If pressure stil becomes ...
March 21, 2009
Hi. I have a little problem with my chemistry task. I have 4 unknown solutions: 1 light blue (A),1 green (B), 2 without colour (C & D). As I understood that the blue one is CuSO4, green one is NiCl2, but 1 uncoloured is NH3, then... A - CuSO4 [couldn't ir be Cu(OH)2?] B - ...
December 27, 2008