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folluga
@folluga
July 2022
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svetka1574
4) n(K3PO4) = m(K3PO4) / M(K3PO4) = 53/ 212 = 0,25 моль
Ответ: 4
5) 3Ca(OH)2 + 2H3PO4 -> Ca3(PO4)2 + 6H2O
3+2+1+6 = 12
Ответ: 4
6) CuSO4 + 2NaOH -> Cu(OH)2↓ + Na2SO4
Ответ: 4
7) BaCl2 + Na2SO4 -> BaSO4 + 2NaCl
Ba(+2) + 2Cl(-) + 2Na(+) + SO4(-2) -> BaSO4 + 2Na(+) + 2Cl(-)
Ba(+2) + SO4(-2) -> BaSO4 ( 1+1+1=3)
Ответ: 4
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Answers & Comments
Ответ: 4
5) 3Ca(OH)2 + 2H3PO4 -> Ca3(PO4)2 + 6H2O
3+2+1+6 = 12
Ответ: 4
6) CuSO4 + 2NaOH -> Cu(OH)2↓ + Na2SO4
Ответ: 4
7) BaCl2 + Na2SO4 -> BaSO4 + 2NaCl
Ba(+2) + 2Cl(-) + 2Na(+) + SO4(-2) -> BaSO4 + 2Na(+) + 2Cl(-)
Ba(+2) + SO4(-2) -> BaSO4 ( 1+1+1=3)
Ответ: 4