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In which chemical equation is the number of atoms in the reactants the same as the number of atoms in the products? A.Zn + 2HCl → H2 + ZnCl2 B.Li2CO3 → LiO + CO2 C. CO2 + H2O → CH2OH + O2 D. CH4 + O2 → CO2 + 2H2O

Respuesta :

Answer:

A.

Explanation:

Oseni

The chemical equation in which the number of atoms in the reactants is the same as that of products would be Zn + 2HCl → H2 + ZnCl2. The correct option would be A.

Let us consider all the component atoms in the equation: Zn + 2HCl → H2 + ZnCl2

  • Zn: 1 atom in the reactant side and 1 atom in product side
  • H: 2 atoms in reactant side and 2 in product side
  • Cl2: 2 atoms in reactant side and 2 in product side.

In Li2CO3 → LiO + CO2:

  • 2 atoms of Li are in reactant side and only 1 in product side

In CO2 + H2O → CH2OH + O2

  • 2 atoms of H are in reactant side while 3 are in product side

In CH4 + O2 → CO2 + 2H2O

  • Only 2 atoms of O are in reactant side while 4 are in product side.

Hence, the only equation in which the number of atoms in the reactants is the same as that of products is Zn + 2HCl → H2 + ZnCl2

More on balancing chemical equations can be found here: https://brainly.com/question/21049751

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