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Chemie

Jaká je látková koncentrace H2SO4 (Mr = 98,0) v 40% roztoku kyseliny sírové, jestliže hustota roztoku je 1,30 kg × dm-3?

Jaká je látková koncentrace H₂SO₄ (Mr = 98,0) v 40% roztoku kyseliny sírové, jestliže hustota roztoku je 1,30 kg × dm^-3?