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Zdravím, nemá tu niekto k poskytnutiu prácu SOČ? Prípadne návrh tém z oblasti biológie/zdravotníctva/farmakológie?
Vzorka obsahujúca zmes oxidu železitého a oxidu hlinitého vážila 0,7125 g. Oxid železity bol vodikom zredukovaný na kovové železo. Hmotnost výslednej zmesi po redukcii bola 0,6398g. Vypočítajte…
Áno alebo Nie 1.Organické zlúčeniny sa vyrábajú zo surovín rastlinného a živočíšneho pôvodu. 2. V cyklickej reťazci sú prítomné aspoň 2 atómy C. 3. C je švorväzbový, viaže sa vždy len štyrmi…
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