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Co-efficients are written in a chemical equation to balance the equation. this is due to the conservation of mass seeing how we can't make substances out of nothing.
For Example.
NaOH + H2SO4 --> Na2SO4 + H2O
As you can see on the left side, there is only one Na (sodium) atom, but on the right hand side we have 2. meaning that an extra sodium atom appeared from no where and this VIOLATES the conservation of mass. so we must balance is
2NaOH+H2SO4 --> Na2SO4 + 2H2O
There are 2 Na on both sides
There is 1 sulfur (s) on both sides
there is 4 H on both sides
and 6 oxygen on both sides.
Hope this helps :D
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoCoefficients 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.
Wiki User
∙ 13y agoThe coefficient represents the molar ratios of each compound or element.
Wiki User
∙ 10y agoCoefficients 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.
Wiki User
∙ 7y agoThe coefficient is placed before an element or compound.
Wiki User
∙ 6y agoWhen in a chemical equation the number of atoms for the reactants and products is the same the equation is correctly balanced.
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What are two things you cannot do to a subscript in a chemical equation?
1. You cannot change the subscript just to help you balance the equation. You can only balance an equation by using whole-number coefficients written at the beginning of a substance. 2. If no subscript is present, you can't just add one to help you balance the equation for same reason listed above.
What does a chemical reaction show?
It shows the preservation of mass and of matter.
What a short easy way to show a chemical reaction using symbols?
Writing a chemical reaction with symbols: Ex.: NaCl + AgNO3 = AgCl (s) + NaNO3 A mathematical (digital) system for the writing of chemical equations exist but it is rarely used.
A shorter easier way to show chemical reactions using symbols instead of works is called?
Chemical Equation
How do you balance H2 plus O2?
The chemical equation is:4 Fe + 3 O2 + 2 H2O = 4 FeO(OH)
What are two things you cannot do to a subscript in a chemical equation?
1. You cannot change the subscript just to help you balance the equation. You can only balance an equation by using whole-number coefficients written at the beginning of a substance. 2. If no subscript is present, you can't just add one to help you balance the equation for same reason listed above.
How do you solve an unbalanced chemical equation?
You add whole-number coefficients as needed until the number of each type of atom is the same on either side of the arrow.Example: given this unbalanced equation: C3H8 + O2 --> CO2 + H2O, you must add some coefficients in front of those substances to make it balance. The solution is: C3H8 + 5O2 --> 3CO2 + 4H2O. Now you can see there's the same number of carbons, hydrogens, and oxygens on each side. Note - the absence of a coefficient means it's understood to be "1".
What is the five dollar idea dressed up in fifty dollar name Describe what the equation allows?
Stoichiometry. You can compare the amounts of any materials in the same chemical equation using the formula weights and the coefficients of the materials in the equation.
A shorthand description of a chemical reaction using chemical formulas and symbols is a chemical what?
A chemical equation is a shorthand description of a chemical reaction.
What info does a chemical equation provide?
A chemical equation shows a reaction between to chemicals using chemical formulas.
The chemical reaction between two or more substances is described using what equation?
A chemical equation.
What is a sentence using the definition chemical equation?
a chemical is like a reaction
An expression in which symbols and formulae represent a chemical reaction?
A stoichiometric equation is a notation that describes a chemical reaction using chemical formulae. An example is CH4 + 2 O2 -> CO2 + 2 H2O
What should you do when using diatomic elements in an equation?
Nothing special, please balance correctly the equation.
What does a chemical reaction show?
It shows the preservation of mass and of matter.
What type of equation describes a chemical reaction in which each side of the equation has the same number of atoms of each element and mass is conserved?
All properly balanced chemical equations fit that criteria: they must have the same number of atoms of each element on each side of the "yield" arrow. Balancing an equation can be achieved by using whole number coefficients as needed. This upholds the Law of Conservation of Mass, which states that matter cannot be created or destroyed.
What is the balance equation for the formation of water using only hydrogen and oxygen?
The chemical equation is 2H2(g) + O2 → 2H2O(l). Two moles of hydrogen reacts with one mole of oxygen to form two moles of water.
