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Dobrý večer,
Mohli by ste nám pômoct so dcérou sa pripravujeme na test ale nevieme správne odpovede
Dobrý den , vedel by mi to niekto skontrolovať ? 1. Upravte schému reakcie na chemickú rovnicu: K + Cl2 ---------> KCl Odpoveď : 2K + Cl2 -------- 2KCl 2. Napíšte chemickú rovnicu,…
Je to takto správne ? Napíšte úplným iónovým zápisom reakciu: 2 KOH (aq) + H2SO4 (aq) → K2SO4 (aq) + H2O (l) Upozornenie: síran draselný tvoria dva katióny draslíka a jeden síranový anión s…
Sú dané body A,B´,C´,S, kde S je stred strany AC. Zostrojte trojuholniky ABC a A´B´C´,ak viete ze trojuholnik A´B´C´ vznikol z trojuholnika ABC posunutím
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