August 2018 1 20 Report
Oblicz masy cząsteczkowe podanych pierwiastków.
a)Cl₂; b)P₄; c)KBr; d)H₂S; e)NH₃; f)Na₂SO₄; g)(NH₄)₂CO₃; h) Mg₃(PO₄)₂; i)MgO j)NaF k)CaO l)H₂So₄

prosze jak najszybciej... to na jutroo. ;D
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