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Sagot :

The chemical equation is balanced  when : a = 1, b = 3, c = 2, d = 2

C₂H₄   +      3O₂   ----->   2CO₂   +    2H₂O

The given equation is :

aC₂H₄   +      bO₂   ----->   cCO₂   +    dH₂O

                        reactants                  products

  C                          2                                1

  H                          4                                2

  O                         2                              2 + 1 = 3

Now , multiply by 2 in CO₂  and H₂O and 3 in O₂, we get

a = 1

b=3

c= 2

d=2

C₂H₄   +      3O₂   ----->   2CO₂   +    2H₂O

                       reactants                  products

  C                          2                                2

  H                         4                                  4

  O                         6                                  6

now all the atoms are now balanced.

Thus, The chemical formula is balanced equation  when : a = 1, b = 3, c = 2, d = 2

C₂H₄   +      3O₂   ----->   2CO₂   +    2H₂O

To learn more about balanced equation here

https://brainly.com/question/12192253

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