1. NaOH 2. HCl 3. P₂O₅ 4. BaCl₂ 5. Cu(OH)₂ 6. CuSO₄ 7. H₃PO₄ 8. AgNO₃ 9. MgO 10. H₂S
1. 2NaOH + SO₂ = Na₂SO₃ + H₂O
2. NaOH + Ca(OH)₂ ≠
3. FeCl₃ + 3NaOH = Fe(OH)₃↓ + 3NaCl
4. CuO + NaOH ≠
5. NaOH + HNO₃ = NaNO₃ + H₂O
6. BaSO₄ + NaOH ≠
<span>3Fe + 2O2 = Fe3O4 я сама написала!</span>
V(HCl)=300/0,62=186 мл=0,186 л.
m(HCl)=p*V=0,186*1,13= 0,21 гр.