Describe the energy inputs and outputs for the campfire. Use the law of conservation of energy to construct a valid qualitative
1 answer:
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Answer: - 436.5 kJ.
Explanation:
According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.
According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation.
The given chemical reaction is,
Now we have to determine the value of for the following reaction i.e,
According to the Hess’s law, if we divide the reaction by half then the will also get halved and on reversing the reaction , the sign of enthlapy changes.
So, the value for the reaction will be:
Hence, the value of for the reaction is -436.5 kJ.
The reaction that has been, following the law of conservation of mass has been .
The law of conservation has been given in the chemical reaction that there has been no loss or gain of the mass and energy.
The law of conservation has been evident when there has been an equal number of atoms of each element on the product and the reactant side.
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The following reactions have been identified as:
Carbon atoms
Reactant = 3
Product = 18
Oxygen atoms
Reactant = 9
Product = 18
Hydrogen atoms
Reactant = 6
Product = 36
The number of atoms is not equal on the product and reactant side, thus not follows the law of conservation of mass.
Carbon atoms
Reactant = 6
Product = 6
Oxygen atoms
Reactant = 24
Product = 18
Hydrogen atoms
Reactant = 12
Product = 12
The number of atoms is not equal on the product and reactant side, thus not follows the law of conservation of mass.
Carbon atoms
Reactant = 6
Product = 6
Oxygen atoms
Reactant = 18
Product = 18
Hydrogen atoms
Reactant = 12
Product = 12
The number of atoms is equal on the product and reactant side, thus follows the law of conservation of mass.
Carbon atoms
Reactant = 6
Product = 0
Oxygen atoms
Reactant = 12
Product = 12
Hydrogen atoms
Reactant = 24
Product = 0
The number of atoms is not equal on the product and reactant side, thus not follows the law of conservation of mass.
Thus, the reaction that has been following the law of conservation of mass has been .
Learn more about law of conservation, here: