Achemical equation is balanced when a the sum of the coefficients of the reactants is equal to the sum of the coefficients of the products b the charge on each atom is the same in both the reactants and products c the number of atoms of each element is the same in both the reactants and products
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Ответ:
For example this equation the combustion of methane CH4:
CH4 + O2 → CO2 +H2O
this is not balanced equation:
as we have the no.of C atoms on the right side = the atoms on the left side = 1
but the no.of H atoms on the right side = 2
and no.of H atoms on the left side = 4
so to get the balanced equation we have to make no.of atoms equal on both sides:
So, we put 2H2O instead of H2O
CH4 + O2 → CO2 + 2H2O
now the no of O atoms on the right side = 4
and the no.of O atoms on the left side = 2
so, we put 2O2 instead of O2 to make no.of O atoms equal on both sides
So we finally get the balanced equation:
CH4 + 2O2 → CO2 + 2H2O
-have 1 C atom on both sides
-have 4 H atoms on both sides
-Have 4 O atoms on both sides
So the equation will be balanced when no.of atoms of each element are the same in both the reactants and products
Ответ:
k=-25
Step-by-step explanation:
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