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You cannot change the subscripts in the molecular identities.
For example, H2SO4 must remain H2SO4 and not changed to something like H3SO7.

Furthermore, the total mass of the reactants must equal the total mass of the products.

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8y ago
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8y ago

A chemical equation is defined as the short-hand representation of a true chemical reaction with the help of symbols and formula. No , of reactants cannot be changed in a chemical equation.

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Q: What number cannot be changed in a chemical equation?
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Related questions

What is the number in an equation that cannot be changed called?

A constant


Why does the number in front of of a chemical have to be changed to balance an equation?

After a chemical reaction the reactants are transformed in other compounds - the products.


What is the difference between a subscript and coefficiant?

A coefficient is the number that goes before an element when your balancing the equation. And a subscript is the number after the element. Subscripts are not changed when you balance the equation.


A number placed in front of a chemical formula in a chemical equation is called?

In a chemical Equation ,The reactants are on the left side of a chemical equation and the products are on the right side.The number in front of a chemical formula in a chemical equation is called atoms. They should be a balancing number on both the sides.


What number of products and reactants are produced by a chemical reaction?

It depends on the reaction. Also, only the products are produced by a chemical reaction; the reactants produce the reaction and are changed in the reaction to the products. (If you have a chemical equation, the number of distinct molecules and/or isolated element symbols on the right side of the equation will show how many distinct products are formed in the reaction.)


Which number in a chemical equation shows you the number of atoms?

The coefficient times the subscripts in a chemical formula show you the number of atoms of each element for each substance in the equation.


A number in front of a chemical formula in a chemical equation is called a?

coefficent


What law states that the number of atoms on the right of a chemical equation is equal to the number of atoms on the left of the chemical equation called?

This is the law of mass conservation.


What is the differences between subscripts and coefficients?

A coefficient is the number that goes before an element when your balancing the equation. And a subscript is the number after the element. Subscripts are not changed when you balance the equation.


What is a chemical equation that shows the same number of each kind of atom on both sides of a chemical equation called?

Balanced


Does a chemical equation show the number of atoms lost during a chemical reaction?

no


What do coefficients in a chemical equation represent?

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.