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Prosím o pomoc s príkladmi Pr. č. 1: Koľko kg vápenca s obsahom 15 % nečistôt je treba k výrobe 200 kg páleného vápna? (oxid vápenatý (CaO)) Pr. č. 2: Koľko litrov 60% kyseliny sírovej H2SO4 (ρ = 1…
Dobrý večer, vedel by mi niekto vysvetliť kedy je v týchto podst.menách zakonečených na l a r, e a y? Pretože tomu vôbec nerozumiem a neviem nás žiadnu poučku, ktorá by mi to vedela normálne…
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