That depends on the nature of the reaction. For a typical reaction, it will be the subscript following the symbol of the element multiplied by the coefficient. For example, in Na2SO4 there will be 2 Na atoms, 1 S atom and 4 O atoms. If the reaction was 2 Na2SO4, there would be 4 Na atoms, 2 S atoms and 8 O atoms.
The subscripts in the chemical formulas of the reactants and products indicates the number of atoms of each element.
the purpose of a subscript is to tell how many atoms of that chemical is used in the formulaThe number of atoms of the same element in the molecule ~APEX
If the number of atoms of each element is the same on both sides of the equation, then it is balanced.
In this case, the equation is balanced.
How does a subscript affect the element just before it?
Yes. There must be the same number of atoms of each element on each side of the equation.
The coefficient times the subscripts in a chemical formula show you the number of atoms of each element for each substance in the equation.
This is the number of atoms of a given element.
A balanced chemical equation has an equal number of atoms of a given element in the reactants and products. This is due to the law of conservation of mass.
same number of each element
A "balanced" equation.
balanced equation
the purpose of a subscript is to tell how many atoms of that chemical is used in the formulaThe number of atoms of the same element in the molecule ~APEX
If the number of atoms of each element is the same on both sides of the equation, then it is balanced.
In this case, the equation is balanced.
In this case, the equation is balanced.
From each side the number of atoms of each element must be the same.
How does a subscript affect the element just before it?