In which chemical equation is the number of atoms in the reactants the same as the number of atoms in the products?(1 point)
Responses
Zn + 2HCl → H2 + ZnCl2
CH4 + O2 → CO2 + 2H2O
Li2CO3 → LiO + CO2
CO2 + H2O → CH2OH + O2
is it right?
it is not
it is Zn + 2HCl → H2 + ZnCl2 ;/
The correct chemical equation in which the number of atoms in the reactants is the same as the number of atoms in the products is:
Zn + 2HCl → H2 + ZnCl2
To determine which chemical equation has the same number of atoms in the reactants as in the products, we need to count the number of each type of atom on both sides of the equation. Let's go through each equation and count the atoms.
1. Zn + 2HCl → H2 + ZnCl2
On the reactant side:
- We have 1 Zinc (Zn) atom.
- We have 2 Hydrogen (H) atoms.
- We have 2 Chlorine (Cl) atoms.
On the product side:
- We have 2 Hydrogen (H) atoms.
- We have 1 Zinc (Zn) atom.
- We have 2 Chlorine (Cl) atoms.
This equation does not have the same number of atoms in the reactants as in the products.
2. CH4 + O2 → CO2 + 2H2O
On the reactant side:
- We have 1 Carbon (C) atom.
- We have 4 Hydrogen (H) atoms.
- We have 2 Oxygen (O) atoms.
On the product side:
- We have 1 Carbon (C) atom.
- We have 2 Oxygen (O) atoms.
- We have 4 Hydrogen (H) atoms.
This equation also does not have the same number of atoms in the reactants as in the products.
3. Li2CO3 → LiO + CO2
On the reactant side:
- We have 2 Lithium (Li) atoms.
- We have 1 Carbon (C) atom.
- We have 3 Oxygen (O) atoms.
On the product side:
- We have 1 Lithium (Li) atom.
- We have 1 Oxygen (O) atom.
- We have 1 Carbon (C) atom.
- We have 2 Oxygen (O) atoms.
This equation does not have the same number of atoms in the reactants as in the products either.
4. CO2 + H2O → CH2OH + O2
On the reactant side:
- We have 1 Carbon (C) atom.
- We have 2 Oxygen (O) atoms.
- We have 2 Hydrogen (H) atoms.
On the product side:
- We have 1 Carbon (C) atom.
- We have 4 Hydrogen (H) atoms.
- We have 1 Oxygen (O) atom.
- We have 2 Oxygen (O) atoms.
This equation does not have the same number of atoms in the reactants as in the products.
Therefore, none of the given chemical equations have the same number of atoms in the reactants as in the products.