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It depends on the equation.
9
2H2O2------------ 2 H2O + O2 thus correct coefficient is 2
2hcl
A balanced chemical equation is when both the products and the reactants are balanced, or have the same number of atoms on each side of the equation. For example: 2H20 --> 2H2 + O2 This means there are 2 water molecules as the reactants (before reaction) and 4 hydrogen and 2 oxygen atoms as the products (after reaction). Technically the equation wouldn't work in real life if it weren't correctly balanced.
Coefficients in a chemical equation represent the number of units of the formula immediately following the coefficient that are involved in the balanced equation for the reaction.
It depends on the equation.
2NF3 --> N2 + 3F2
2NF3 --> N2 + 3F2
9
2H2O2------------ 2 H2O + O2 thus correct coefficient is 2
2hcl
A balanced chemical equation is when both the products and the reactants are balanced, or have the same number of atoms on each side of the equation. For example: 2H20 --> 2H2 + O2 This means there are 2 water molecules as the reactants (before reaction) and 4 hydrogen and 2 oxygen atoms as the products (after reaction). Technically the equation wouldn't work in real life if it weren't correctly balanced.
The information in a balanced chemical equation shows how many moles of a reactant are involved in a reaction is the number appearing immediately before the formula for the reactant in question in the chemical equation. This number is called a "coefficient".
The coefficient of O2 is 5.The chemical equation is:C5H12 + 8 O2 = 5 CO2 + 6 H2O
A balanced chemical equation has correct placed coefficients and a representative chemical equation need these coefficients.
The chemical equation is:C5H12 + 8 O2 = 5 CO2 + 6 H2O