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Dobrý deň, potreboval by som skontrolovať krátky text. Vedel by mi niekto pomôcť? Gramatiku, slovosled . . . . Viac napíšem v súkromej správe.
ahojte, prečo roztok hydrogenuhličitanu vápenateho sa odvodzuje od h2co3 nemalo by sa to odvodzovat od trihydrgogen?
Dobrý deň, chcem sa opýtať na výpočet pH Ba(OH)2 Jeho pH je pH=-log(2xc), to viem. Ale pri opačnom výpočte (výpočte koncentrácie z pH) by som tiež mala zahrnúť tú dvojsýtnosť, nie? Čiže 10 umocnené…
Dobry den nevedeli by ste mi pomoct vypracovat ulohu 1,2 lebo neviem kedy v prvej ulohe je kysekina silna preot neviem kedy reaguje s vodou a v ulohe dva nerozumeim tomu S-2 ci to potom bude HS-
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