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14 December, 10:10

Which represents a balanced chemical equation?

CO (2) + 2H (2) 0 → 2CH (4) + 20 (2)

CH (4) + O (2) → CO (2) + H (2) O

CH (4) + 20 (2) → CO (2) + 2H (2) O

CO (2) + H (2) O → CH (4) + O (2)

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Answers (1)
  1. 14 December, 10:13
    0
    The answer to your question is the third one

    Explanation:

    Check which reaction is balanced

    a) CO₂ + 2H₂0 → 2CH₄ + 20₂

    Reactants Products

    1 C 2

    4 H 8

    4 O 4

    This reaction is unbalanced because the number of reactants is different from the number of products.

    b) CH₄ + O₂ → CO₂ + H₂O

    Reactants Products

    1 C 1

    4 H 2

    2 O 3

    This reaction is unbalanced because the number of reactants is different from the number of products.

    c) CH₄ + 20₂ → CO₂ + 2H₂O

    Reactants Products

    1 C 1

    4 H 4

    4 O 4

    This reaction is balanced because the number of reactants is equal to the number of products.

    d) CO₂ + H₂O → CH₄ + O₂

    Reactants Products

    1 C 1

    2 H 4

    3 O 2

    This reaction is unbalanced because the number of reactants is different from the number of products.
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