Question

Al + H₂SO4 → Al₂(SO4)3 ? + HCe → ZnCl₂ + H₂O нсе 7 2 MgO + ? → Mg(NO₂)₂ + KOH + ? → Kce + H₂O​

Answer 1

Объяснение:

2Al + 3H₂SO4 → Al₂(SO4)3 + 3Н2↑

ZnO + 2HCl → ZnCl₂ + H₂O

MgO + 2HNO3 → Mg(NO3)₂ + H2O

KOH + HCl → KCl + H₂O

Answer 2

Balancing Chemical Equations:

To balance the given chemical equations, we need to ensure that the number of atoms of each element is the same on both sides of the equation. Let's balance each equation step by step:

1. Al + H₂SO₄ → Al₂(SO₄)₃: To balance this equation, we need to ensure that the number of aluminum (Al) atoms and sulfur (S) atoms are the same on both sides. Here's the balanced equation: ``` 2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂ ```

2. HCe + ZnCl₂ → H₂O + nCeCl₃: To balance this equation, we need to ensure that the number of hydrogen (H) atoms, cerium (Ce) atoms, and chlorine (Cl) atoms are the same on both sides. Here's the balanced equation: ``` 2HCe + 3ZnCl₂ → 3H₂O + 2nCeCl₃ ```

3. 7MgO + ? → Mg(NO₂)₂: To balance this equation, we need to ensure that the number of magnesium (Mg) atoms, oxygen (O) atoms, and nitrogen (N) atoms are the same on both sides. Here's the balanced equation: ``` 7MgO + 4N₂O₄ → 4Mg(NO₂)₂ ```

4. KOH + ? → KCe + H₂O: To balance this equation, we need to ensure that the number of potassium (K) atoms, oxygen (O) atoms, cerium (Ce) atoms, and hydrogen (H) atoms are the same on both sides. Here's the balanced equation: ``` 2KOH + Ce₂O₃ → 2KCe + 3H₂O ```

Please note that the values of 'n' and '?' in the equations are not specified, so I have balanced the equations based on the given information.

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