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222-9+11+12:2*14+14 = ? ( )

Hóa học Lớp 8: Cân bằng: 1) MgCl2 + KOH → Mg(OH)2 + KCl 2) Cu(OH)2 + HCl → CuCl2 + H2O 3) Cu(OH)2 + H2SO4 → CuSO4 + H2O 4) FeO + HCl → FeCl2 + H2O 5)

Hóa học Lớp 8: Cân bằng:
1) MgCl2 + KOH → Mg(OH)2 + KCl
2) Cu(OH)2 + HCl → CuCl2 + H2O
3) Cu(OH)2 + H2SO4 → CuSO4 + H2O
4) FeO + HCl → FeCl2 + H2O
5) Fe2O3 + H2SO4 → Fe2(SO4)3 + H2O
6) Cu(NO3)2 + NaOH → Cu(OH)2 + NaNO3
7) P + O2 → P2O5
8) N2 + O2 → NO
9) NO + O2 → NO2
10) NO2 + O2 + H2O → HNO3, giúp em giải bài hóa này ạ, em cảm ơn thầy cô và các bạn nhiều.

Comments ( 2 )

  1. MgCl_2 + 2KOH → Mg(OH)_2 + 2KCl
    Cu(OH)_2 + 2HCl → CuCl_2 + 2H_2 O
    Cu(OH)_2 + H_2 SO_4 → CuSO_4 + 2H_2O
    FeO + 2HCl → FeCl_2 + H_2 O
    Fe_2 O_3 + 3H_2 SO_4 → Fe_2 (SO4)_3 + 3H_2 O
    Cu(NO_3)_2 + 2NaOH → Cu(OH)_2 + 2NaNO_3
    4P + 5O2 → 2P_2 O_5
    N_2 + O_2 → 2NO
    2NO + O_2 → 2NO_2
    2NO_2 + O_2 + H_2 O → 2HNO_3

  2. 1) MgCl2 + 2KOH → Mg(OH)2 + 2KCl
    2) Cu(OH)2 + 2HCl → CuCl2 + 2ZH2O
    3) Cu(OH)2 + H2SO4 → CuSO4 + 2H2O
    4) FeO + 2HCl → FeCl2 + H2O
    5) Fe2O3 + 3H2SO4 → Fe2(SO4)3 + 3H2O
    6) Cu(NO3)2 + 2NaOH → Cu(OH)2 + 2NaNO3
    7) 4P + 5O2 → P2O5
    8) N2 + O2 → 2NO
    9) 2NO + O2 → 2NO2
    10) 4NO2 + O2 + 2H2O → 4HNO3
     

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222-9+11+12:2*14+14 = ? ( )