July 2022 1 4 Report
А7.Временная жесткость воды обусловлена наличием ионов:

А) Са2+, Mg2+, Cl-;

Б) Ca2+, Mg2+, HCO3- ;

В) Ca2+, Mg2+, SO42-;

Г) Ca2+, Mg2+, NO3-.
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