There are 0.0214 mol Cs in 1.29×10²² atoms Cs.
Use <em>Avogadro’s number</em> to convert atoms of Cs to moles of Cs.
Moles of Cs = 1.29×10²² atoms Cs × (1 mol Cs /6.022 × 10²³ atoms Cs) = 0.0214 mol Cs
Answer:
Explanation:
In a nuclear reaction, the total mass and total atomic number remains the same.
Am has an atomic number of 95. So correct reaction is:-
To calculate A:
Total mass on reactant side = total mass on product side
343 + 4 = A + 2
A = 345
To calculate Z:
Total atomic number on reactant side = total atomic number on product side
95 + 2 = Z + 0
Z = 97
Hence, the isotopic symbol of unknown element is
All the elements in one group have the same number of valence electrons.
<h3>Redox Half reaction</h3>
At cathode
Mn^+2 + 2e- → Mn (reduction)
At anode
Fe → Fe^+2 + 2e- (oxidation)
<h3>Overall reaction</h3>
Mn^+2 + Fe → Mn + Fe
<h3>
How can one determine whether a reaction is a redox in nature?</h3>
1) Identify the reducing and oxidizing agents. To do this, we must determine their oxidation numbers.2) For oxidation and reduction, write half-reactions. To equalize the charges on both sides, we use electrons. Get the redox reaction, third. (1) and (2) can be combined to produce the redox reaction. The balanced redox reaction shouldn't have any electrons from the half-reactions.
<h3>
What does the term "redox reaction" mean?</h3>
One species is reduced and another is oxidized in redox reactions. As a result, the species in question must shift in oxidation state. These reactions play a crucial role in the production and usage of energy in a variety of living systems, including humans and energy storage devices (batteries).
Learn more about redox reaction here:-brainly.com/question/28023605
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