# Why do you use coefficients in chemical equations?

The motivation is to note the number of atoms in a molecule.

### How are coefficients used in writing chemical equations?

They indicate the number of molecules in a substance.

### 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.

### Are Chemical equations are balanced by changing the subscripts of the molecules?

ABSOLUTELY NOT Change the coefficients on reactant or productt units.

### How Chemical equations are balanced by changing the subscripts of the molecule true or false?

False. They are balanced by changing the coefficients.

### Is it true that chemical equations are written to describe chemical reactions?

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.

### Number to the left of element's symbols in a chemical equation that are used to balance the chemical equation?

The numbers to the left of the chemical symbols in an equation, which are used to balance chemical equations are called 'coefficients.'

### Solve linear equations with complex coefficients on both sides?

You would solve them in exactly the same way as you would solve linear equations with real coefficients. Whether you use substitution or elimination for pairs of equations, or matrix algebra for systems of equations depends on your requirements. But the methods remain the same.

### 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.

### Why are coefficients used to balance equations?

Coefficients are used to balance equations because if you change the subscript, than you would change the substance.

### 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.

### 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.

### 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 a good practice to use when balancing equations?

Leave a blank space before each substance in a reaction for the coefficients

### What are the common characteristic between simultaneous linear equations in 2 unknowns which have no solutions?

The coefficients and constant in one of the equations are a multiple of the corresponding coefficients and constant in the other equation.

### Why do you use chemical equation?

Chemists use chemical equations to describe what happens in a chemical reaction. The equations save time and space and provide the information in an easy to read form.

### Which best describes a system of equations that has no solution?

An "inconsistent" set of equations. If they are all linear equations then the matrix of coefficients is singular.

### How to solve chemical equations?

:A balanced equation MUST have EQUAL numbers of EACH type of atom on BOTH sides of the arrow.An equation is balanced by changing coefficients in a somewhat trial-and-error fashion. It is important to note that only the coefficients can be changed, NEVER a subscript.

### What makes a system of equations dependent?

If one (or more) of the equations can be expressed as a linear combination of the others. This is equivalent to the statements the matrix of coefficients does not have an inverse (or is singular), or the determinant of the matrix of coefficients is zero.

### What is the coefficent that shows in a chemical equation?

Equations for chemical reactions may require one or more whole-number coefficients in order for the equation to balance. Balancing a chemical equation upholds the law of conservation of mass, which states that matter cannot be created or destroyed. The coefficients represent molar ratios of reactants and products. Performing stoichiometric calculations is largely dependent upon these correct molar proportions.

### When will a system of linear equations be inconsistent?

When the matrix of coefficients is singular.

### Can you adjusts subscripts when balancing equations?

No, or you'd change the chemicals being reacted. Added: There is always ONE and ONLY ONE way in which you can put the right COEFFICIENTS of each reacting compound in a balanced equation, by only changing the values of those coefficients. (That are the figures in FRONT of the chemical formula's).

### What are two reasons why scientists prefer to use chemical equations instead of word equations?

One reason is the chemical equations are much more specific, and the second reason is it is much easier

### What do scientists use to describe chemical reactions?

scientists use chemcal equations to describe a chemical equation

### What is a balanced chemical equation why should the chemical equation be balanced?

A balanced chemical equation has correct placed coefficients and a representative chemical equation need these coefficients.

### What is the role of coefficients in chemical equations?

Coefficients 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… Read More

### How do you calculate the entropy change of a chemical reaction?

Look up in a table the standard molar entropies of the reactants and the products. This is usually abbreviated at S0, and is in units of J/(mol*K) Use Hess's Law, which states that the change in entropy of a reaction is equal to the sum of the standard entropies of the products (multiplied by the coefficients from the balanced equations) minus the sum of the standard entropies of the reactants (multiplied by the sum of… Read More

### What are some complex equations for 17?

Complex equations? Do you mean complicated equations whose solution is 17, - or equations with complex (non-real) coefficients or solutions? If you can explain, please resubmit your question.

### What does it means if there are an infinite number of solutions to a system of equations?

In simple terms all that it means that there are more solutions than you can count! If the equations are all linear, some possibilities are given below (some are equivalent statements): there are fewer equations than variables the matrix of coefficients is singular the matrix of coefficients cannot be inverted one of the equations is a linear combination of the others

### How does the method for solving equations with fractional or decimal coefficients and constants compare with the method for solving equations with an integer coefficients and constants?

The methods are basically the same. For fractions, it is recommended to multiply everything by the common denominator first, but that's just for convenience.

### Can subscripts in a chemical formula be fractions?

The Subscripts in a Chemical formula explain how the atoms in that compound are chemically bonded. As a fraction of an atom cannot bond, the subscripts cannot be fractions. Coefficients, however which go before a chemical formula in chemical equations may be fractions. This is because they explain the ratio of the number of moles of each species required for the reaction and it is possible to have a fraction of a mole of something… Read More

### How do you find coefficients in chemistry equations?

It is necessary to know the reactants, the products and the valences.

### Is it possible to have two different looking equations in the same version of point slope form for the same line?

It depends on what constitutes different looking: how similar must the equations be before you see that they are the same. If both equations are in the point-slope form, the coefficients of one equation must be a fixed multiple of the coefficients of the other.

### What do the arrows and coefficients used by chemists in equations communicate?

The coefficients in a chemical equation tell how many molecules of that type are reacting. The arrows point in the direction of the reaction. Ex. 2 H + 1 O -> 1 H2O has two hydrogen molecules interacting with one oxygen molecule to form one water molecule.

### How are chemical equations helpful?

Chemical equations are representative for chemical reactions.

### How are coefficients used to balance chemical equation?

In a chemical equation, the coefficients tell you how much you need of each molecule or atom, to balance the equation.

### What information can you determine from the coefficients in this balanced chemical equation?

What information can you determine from the coefficients in this balanced chemical equation? Mg + 2HCl → MgCl2 + H2

### How are coefficients and subscripts the same?

Coefficients and subscripts, both have the same bonds, in their chemical reactions.

### How do you solve equations involving fractional coefficients?

multiply the whole equation by the number in the denominator

### Why are chemical formulas and chemical equations used?

Chemical formulas are used because they show the chemical make up of a substance. Chemical equations are used because it is much easier to use symbols as a shorthand way of describing and visualizing a chemical reaction, rather than writing it out in words.

### Where should coefficients be placed when balancing a chemical equation?

Coefficients are placed in front of the chemical formula for each substance in a chemical equation. The number 1 is not written. If there is no coefficient it is understood to be 1.

### What is the importance of the coefficients in a balanced chemical equation?

Coefficients are imortant in a balanced chemical reaction, because it shows you how much of that chemical is reactanting, and also how much is being produce to form the products.

### Where should the coefficients be placed when balancing a chemical equation?

Coefficients are placed in front of the chemical formulas when balancing a chemical equation. Never change the subscripts in a formula in order to balance an equation.

### What information does a chemical equation contain?

chemical equations use chemical formulas and other symbols instead of words to summarize a reaction.

### What do scientists use to represent how elements react in the presence of other elements?

They use chemical equations.