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Je gramaticky správne napísať dátum 28.5.2017, alebo je nevyhnutné dávať za každou časťou dátumu aj medzeru? Vopred ďakujem za odpoveď.
Navážka 0,8500 g technického siřičitanu sodného urobená do 50 ml 0,2N-I3- a na titraciu nezreagovaného jodu sa spotrebovalo 15,0 ml 0,1N-Na2S2O3. Koľko % Na2SO3 vzorka obsahuje?
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