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An unbalanced equation has more reactants than products, or vice versa. Stoichiometry, the science of balancing equations, uses coefficients to balance both sides of the reaction to follow the Conservation of Mass.
Ex: Ca + H2O --> H2 + Ca2O3 This is unbalanced because there is one more calcium atom and two more oxygen atoms produced than there were put in.
2Ca + 3H2O --> 3H2 + Ca2O3 Now the equation is balanced, with the products equivalent to the reactants.
Wiki User
∙ 12y ago
Wiki User
∙ 10y agoCoefficients are written in front of a chemical formula in a chemical equation, in order to balance the equation by changing the amount of reactants and products as needed, in order to make the numbers of atoms of each element the same on both sides of the equation. This is done by multiplying each subscript of each element by the coefficient. If there is no coefficient, it is understood to be 1. It is necessary to balance a chemical equation in order to satisfy the law of conservation of mass/matter, and to perform stoichiometry.
Wiki User
∙ 15y agoA balanced chemical equation shows how many of what molecules react, how many of what molecules result, and sometimes the state of the substances.
Wiki User
∙ 14y ago= number of atoms IN a chemical compound formula
Wiki User
∙ 13y agoA coefficient is a number, a multiplier or a factor which measures a property.
Wiki User
∙ 7y agoThe motivation is to note the number of atoms in a molecule.
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How are coefficients used in writing chemical equations?
They indicate the number of molecules in a substance.
How Chemical equations are balanced by changing the subscripts of the molecule true or false?
False. They are balanced by changing the coefficients.
Is this true or false Subscripts can be changed in order to balance a chemical equation?
False. Subscript cannot be change to balance chemical equations. Only coefficients can be added to balance chemical equation.
What the steps for balancing chemical equations?
Which of the following are steps for balancing chemical equations? Check all that apply. B. Choose coefficients that will balance the equation. And D. Recheck the numbers of each atom on each side of the equation to make sure the sides are equal. Apex
Does a chemical formula describes a chemical reaction?
Yes, chemical equations describe chemical reactions. A chemical equation tells you what substances are reacting, what substances are produced and, in a balanced equation, provides the coefficients to tell us in what ratio the substances react or are produced.
Why are coefficients used in chemical equations?
to determine the mole of the atom
What in chemical equations provide mole ratios that can be used as conversion factors?
Coefficients
How are coefficients used in writing chemical equations?
They indicate the number of molecules in a substance.
How Chemical equations are balanced by changing the subscripts of the molecule true or false?
False. They are balanced by changing the coefficients.
Are Chemical equations are balanced by changing the subscripts of the molecules?
ABSOLUTELY NOT Change the coefficients on reactant or productt units.
Is this true or false Subscripts can be changed in order to balance a chemical equation?
False. Subscript cannot be change to balance chemical equations. Only coefficients can be added to balance chemical equation.
How does the method for solving equations with fractional or decimal coefficients and constants compare with the method for solving equations with integer coefficients and constants?
The method is the same.
What is used to balance chemicals equations?
coefficients
How do you tell how many atoms of iron and oxygen are present as products and how many are present as reactants in the chemical equations?
The number of atoms is indicated by coefficients.
Why must chemical equations be balanced using coefficients?
The number of atoms in the reactant and products must be equal to obey the law of conservation of mass.
Which do you use to balance equations subscrips or coefficients?
Both. you must have the correct subscripts to represent the correct chemical then you only change the coefficients to balance the equation. The product of a coefficient and a subscript tells how many atoms are present.
What is a constant value that are not coefficients of variables to equations?
parameters
