Question

plz.. give me correct answer .
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Answer 1

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Answer 2

Answer:

Balancing is important!

1. Al+O₂⇒Al₂O₃

Multiply 2 to Al, 3 to O₂, 2 to Al₂O₃ to balance the equation.

4Al+3O₂=2Al₂O₃

2. ZnS+O₂=ZnO+SO₂ Balancing:

2ZnS + 3O₂ = 2ZnO + 2SO₂

3. (NH₄)₂Cr₂O₇ = Cr₂O₃ + N₂ + H₂O Balancing:

(NH₄)₂Cr₂O₇=Cr₂O₃+N₂+4H₂O

4. Na+H₂O=NaOH+H₂ Balancing:

2Na + 2H₂O = 2NaOH + H₂

5. Pb₃O₄=PbO+O₂

2Pb₃O₄ → 6PbO + O₂.

HOPE THIS HELPS :D