answersLogoWhite

0


Best Answer

They are called coefficients. They represent the number of moles of that element required for the reaction to be completed as written in relation to the number of moles for the other elements. They can also be considered the number of molecules required (different from moles), but most combustion reactions include 1/2 as a coefficient for O2. So don't get confused.

User Avatar

Wiki User

14y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

14y ago

Coefficients

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What are large numbers placed to the immediate left of the element's symbols in a chemical equation that are used to balance the chemical equation?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Why should you balance chemical reaction?

we should balance a chemical equation so that both the sides of the elements and compounds are equal.


Who was the first iatrochemist to balance a chemical equation?

Jean Beguin was the first iatrochemist to balance a chemical equation.


What is the relationship between coefficient and balance chemical equation?

balance chemical equation, change only the coefficients of the formulas.


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 can knowing the formula weights of the elements help you balance the equation?

The molar mass is not needed to balance a chemical reaction.You need to know the chemical formulas of reactants, the possible formulas of products, valences of elements and ions, general principles of chemical reactions, some chemical and physical properties of substances involved in the reaction.


Subscripts can be changed in order to balance a chemical equation.?

false


What process is held to balance the chemical equation KCl?

KCl is the chemical formula unit of potassium chloride not a chemical equation.


What is the balance of chemical equation involve in evaporation?

Evaporation is not a chemical change and so there is no chemical equation.


How can one tell how much reactant will be used in a reaction?

from a balanced chemical equation


How do you check a formula for dimensional consistency?

In the same way as you made sure that the chemical elements balanced on both sides of a chemical reaction equation, so also the physical dimensions balance.


How do you calculate the mass of an object in a chemical equation?

balance your chemical reaction equation then calculate moles, then calculate weight.


What is a balance chemical equation for lead chloride?

PbCl2 is the molecular formula (not chemical equation) of lead(II) chloride.