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French video.
Posted 2 months ago by CyberHound in category: crazy   Comments (0)


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Posted 2 months ago by OHC in category: crazy   Comments (1)


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Posted 3 weeks ago by boyt in category: interesting   Comments (0)



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Posted 1 week ago by kaldie in category: funny   Comments (6)


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The reaction of phosphoric acid with calcium contained in milk gives rise to a precipitate 3Ca + 2H3PO4 /// Ca3(PO4)2 + 3H2
Posted 3 months ago by anri1 in category: science   Comments (1)