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Chemie

Máte připravit 15% roztok kyseliny sírové z 1,5 kg 20% H2SO4. Určete hmotnost potřebného přídavku vody:

Máte připravit 15% roztok kyseliny sírové z 1,5 kg 20% H₂SO₄. Určete hmotnost potřebného přídavku vody: