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2 September, 20:14

Which of the following equations are balanced?

A: 2H2 + O2 → 2H2O

B: 2S + 3O2 → 2SO3

C: Li + Cl2 → LiCl

D: 2K + 2H2O → H2 + 2KOH

E: 2Fe + Cu (NO3) 2 → 2Cu + Fe (NO3) 2

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Answers (1)
  1. 2 September, 20:20
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    A: 2H₂ + O₂ → 2H₂O

    H: 4 H:4

    O: 2 O: 2

    The equation is balanced.

    B. 2S + 3O₂ → 2SO₃

    S: 2 S: 2

    O: 6 O: 6

    The equation is balanced.

    C. Li + Cl₂ → LiCl

    Li: 1 Li: 1

    Cl: 2 Cl: 1

    The equation is not balanced.

    2Li + Cl₂ → 2LiCl

    Li: 2 Li: 2

    Cl: 2 Cl: 2

    D: 2K + 2H₂O → H₂ + 2KOH

    K: 2 K: 2

    H: 4 H: 4

    O: 2 O: 2

    The equation is balanced.

    E: 2Fe + Cu (NO₃) ₂ → 2Cu + Fe (NO₃) ₂

    Fe: 2 Fe: 1

    Cu: 1 Cu: 2

    N: 2 N: 2

    O: 6 O: 6

    The equation is not balanced.

    2Fe + 2Cu (NO₃) ₂ → 2Cu + 2Fe (NO₃) ₂

    Fe: 2 Fe: 2

    Cu: 2 Cu: 2

    N: 4 N: 4

    O: 12 O: 12

    The following equations that are balanced are A, B, and D.
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