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Liter roztoku A, y ktorom je 10 g NaOH miesame s roztokom B, ktorého 1 liter obsahuje
9,45 g HNO,. Aké bude pH a pOH vzniknutého roztoku? (log 0,05 = - 1,3; log 0,1 = - 1)
Vypočítajte pH roztoku, ktory vznikne miešaním 50 ml kyseliny sírovej s c = 0,25 mol. I-1 a 50 ml hydroxidu draselného s c = 0,25 mol. l-1. (log 0,250 = - 0,602; log 0,125 = - 0,903) Dakujem moc 🙏🏼
Dvanásti zberači vyzbierali jablká v ovocnom sade za štyri dni. Na tretí deň ráno však prišli už len štyria zberači. Aký čas by bol potrebný na vyzbieranie celého sadu?
V trojuholníku KLM je pomer dĺžok LM : KM = 3 : 4 a zároveň je pomer dĺžok KM : KL = 8 : 10. Aký je pomer dĺžok ML : KL?
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