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Which number belongs in the blank in order for this to be a balanced equation Na2CO3 plus CaCl2 NaCl plus CaCO3?
Wiki User
∙ 12y ago
The answer is TWO (2)
Na2CO3 + CaCl2 --> 2 NaCl + CaCO3
Wiki User
∙ 12y ago
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How can I tell if a chemical reaction is balanced or not balanced?
If the equation has the same number of each type of atom on both sides of the arrow, it is balanced. If the number of atoms on each side of the arrow is not the same, the equation is not balanced. For example, in the equation H2 + O2 -->H2O, there are two hydrogen atoms and two oxygen atoms on the left, and two hydrogen atoms and one oxygen atom on the right. Therefore, the equation is not balanced. However, in the equation 2H2 + O2 -->2H2O, there are four hydrogen atoms and two oxygen atoms on the left and four hydrogen atoms and two oxygen atoms on the right, so the equation is balanced.
If the number of atoms of each element in the products equals the number of atoms of each element in the reactants the equation is?
In this case, the equation is balanced.
How many grams of NaOH are formed from reacting 120g sodium carbonate with excess calcium hydroxide?
Write out the equation, and remember to balance each side.Na2CO3 + Ca(OH)2 --> 2NaOH + CaCO3Molecular WeightsNa2CO3: 106 grams/moleNaOH: 40 grams/moleAlways convert your reagents into moles.(120g Na2CO3) x (1 mole Na2CO3/106 grams Na2CO3) = 1.132 molesAccording to the balanced equation, 1 molecule of Na2CO3 generates 2 molecules of NaOH.(1.132 moles Na2CO3) x (2 moles NaOH/1 mole Na2CO3) = 2.264 moles NaOHNow determine the number of grams from 2.264 moles of NaOH.(2.264 moles NaOH) x (40 grams/ 1 mole NaOH) = 90.57 grams NaOH formed.To prevent rounding off too many times, carry out the dimensional analysis in one step:(120g Na2CO3) x (1 mole Na2CO3/106 grams Na2CO3) x(2 moles NaOH/1 mole Na2CO3) x (40 grams/ 1 mole NaOH) = 90.57 grams NaOH
Every balanced chemical equation each side has the same number of?
same number of each element
When a chemical equation contains the same number of atoms on both sides is the equation balanced?
From each side the number of atoms of each element must be the same.
What determines if a chemical equation is balanced?
If the number of atoms of each element is the same on both sides of the equation, then it is balanced.
An equation is balanced when .?
the number and type of atoms of reactant and product are the same
Equations show each side is equal as far as the number of atoms and molecules?
this is called having a balanced equation .....if both sides are not balanced u must correct it by changing the number of moles
When is an equation correctly balanced?
An equation is balanced when the number of each kind of atoms and the total charge of all particles are the same or equal for both the reactants and the products (ie on both sides of the equation).
Can the number of moles of a substance be found by looking at a balanced equation?
yes the number of moles is the the number before the substance for example if the equation is balanced and you want to find H2O and it appears like 3H2O in the equation then their are 3 moles of H2O
What is the term for a chemical equation that has the same number of atom on both side?
Balanced equation
What kind of chemical equation has the same number of atoms of each element on each side of the equation?
A "balanced" equation.
Why is the chemical equation 2H2 O2 balanced?
2H2 + O2 ---->2H2O is balanced for the following reasons. Hydrogen and oxygen exist as H2 and O2 and not H and O. The product is water with a formula of H2O. To get balance the number of atoms of reactants and the number of atoms of products must be equal. They are in the balanced equation above. For these reasons the equation is balanced.
How can I tell if a chemical reaction is balanced or not balanced?
If the equation has the same number of each type of atom on both sides of the arrow, it is balanced. If the number of atoms on each side of the arrow is not the same, the equation is not balanced. For example, in the equation H2 + O2 -->H2O, there are two hydrogen atoms and two oxygen atoms on the left, and two hydrogen atoms and one oxygen atom on the right. Therefore, the equation is not balanced. However, in the equation 2H2 + O2 -->2H2O, there are four hydrogen atoms and two oxygen atoms on the left and four hydrogen atoms and two oxygen atoms on the right, so the equation is balanced.
If the number of atoms of each element in the products equals the number of atoms of each element in the reactants the equation is?
In this case, the equation is balanced.
If the number of atoms of each element in the products equals the number of atoms of each element in the reactants the equation is .?
In this case, the equation is balanced.
What is a chemical equation in which both the reactant an product have an equal number of atoms of a given element?
balanced equation
