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Dobrý deň, chcela by som sa opýtať na riešenie nasledovného chem. príkladu: Žíhaním sa rozložila zmes uhličitanu vápenatého a hydrogenuhličitanu sodného s hmotnosťou 3,5g. Po vyžíhaní mala vzorka…
Dobrý deň, prosím o pomoc s riešením nasl. príkladu: Akú hmotnosť síranu meďnatého treba použiť na prípravu jeho roztoku, w(CuSO4)=4% s hmotnosťou 100g? K dispozícii je modrá skalica. Vyjsť by malo…
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