It took many of the metals several minutes to begin to react. Once the reaction was initiated, several of these metals continued
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Answer:
8.533 Mev/nucleon
Explanation:
The given elements is:-
Atomic number : It is defined as the number of electrons or number of protons present in a neutral atom.
Thus, the number of protons = 25
Mass number is the number of the entities present in the nucleus which is the equal to the sum of the number of protons and electrons.
Mass number = Number of protons + Number of neutrons
55 = 25 + Number of neutrons
Number of neutrons = 30
Mass of neutron = 1.008665 amu
Mass of proton = 1.007825 amu
Calculated mass = Number of protons*Mass of proton + Number of neutrons*Mass of neutron
Thus,
Calculated mass = (25*1.007277 + 30*1.008665) amu = 55.441875 amu
Actual mass = 54.9380451 amu
Mass defect = Δm = |54.9380451 - 55.441875| amu = 0.5038299 amu
The conversion of amu to MeV is shown below as:-
1 amu = 931.5 MeV
So, Energy = 0.5038299*931.5 MeV= 469.317552 MeV
Total number of nucleons in the atoms = 55
<u>So, Energy = 469.317552/55 MeV/nucleon = 8.533 Mev/nucleon</u>
Answer : The oxidizing and reducing agents are, and
.
Explanation :
Redox reaction or Oxidation-reduction reaction : It is defined as the reaction in which the oxidation and reduction reaction takes place simultaneously.
Oxidation reaction : It is defined as the reaction in which a substance looses its electrons. In this, oxidation state of an element increases. Or we can say that in oxidation, the loss of electrons takes place.
Reduction reaction : It is defined as the reaction in which a substance gains electrons. In this, oxidation state of an element decreases. Or we can say that in reduction, the gain of electrons takes place.
Reducing agent : It is defined as the agent which helps the other substance to reduce and itself gets oxidized. Thus, it will undergo oxidation reaction.
Oxidizing agent : It is defined as the agent which helps the other substance to oxidize and itself gets reduced. Thus, it will undergo reduction reaction.
The given redox reaction is:
The half oxidation-reduction reactions are:
Oxidation reaction :
Reduction reaction :
The oxidation state of oxygen in and
is, (-1) and (-2) respectively.
In this reaction, 'Fe' is oxidized from oxidation (+2) to (+3) and 'O' is reduced from oxidation state (-1) to (-2). Hence, '' act as a reducing agent and '
' act as a oxidizing agent.
Thus, the oxidizing and reducing agents are, and
.