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P - 5 – Alfa Rosa
834205017
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2 4 42 aq 3 s 3 s aq3Ca OH A SO 2A OH 3Ca SO
s 2 g s2Mg 1O 2MgO
s aq 2 aq 2 gZn 2HC ZnC H
4 23 s 2 g 3 gNH HCO CO NH H O
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β
➀ ➁
➂