Which statement defines activation energy?
2 answers:
Answer:
Explanation:
Activation energy is the minimum amount of energy required to begin a reaction.
Reactants have their own certain amount of energy which is known as internal energy and represented by . A reaction involves an energy barrier that needs to be crossed by the reactants in order to form the products. This energy barrier is the activation energy.
A reaction that does not have activation energy will not take place at all.
Therefore, the statement which defines activation energy is that it is the difference between reactant energy and maximum energy.
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Answer:
0.011 moles
Explanation:
There are about 6.02*10^23 atoms in a mole, so in the given sample, there are
which is about 0.011 moles.
Answer:
See explaination
Explanation:
The invariant mass of an electron is approximately9. 109×10−31 kilograms, or5. 489×10−4 atomic mass units. On the basis of Einstein's principle of mass–energy equivalence, this mass corresponds to a rest energy of 0.511 MeV.
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