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H2po4=CA(h2po4)2. Ca3 po4 2. CA(h3po4)2. H3po4 ca3 po4 2 уравнение.
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Под p
H2po4=CA(h2po4)2. Ca3 po4 2. CA(h3po4)2. H3po4 ca3 po4 2 уравнение. 