The question is incomplete. Complete question is attached below:
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Correct Answer is : 54 131Xe
Reason:
Emission of beta particle from radioactive material increases atomic number by one, but atomic mass number donot change.In present case, the reactant is 53 131 I. When, iodine emits beta particle i.e. electron, it atomic number increases by one. Hence, it gets converted into Xe. Atomic number of Xenon is 54.
Answer:
Average atomic mass of potassium based on these relative abundances

Explanation:
The atomic mass of this element will be equal to the sum of product of its three isotopic masses and its fractional abundance
For isotope I -
Mass of Potassium-39
amu
Fractional abundance of Potassium-39
%
Mass of Potassium-40
amu
Fractional abundance of Potassium-40
%
Mass of Potassium-41
amu
Fractional abundance of Potassium-41
%
Average atomic mass of potassium based on these relative abundances

Answer:
A)
Explanation:
Heat moves from where it's hot, to where it's not
Answer:
28.800
Explanation:
SO if you inhale 20 times per minutes (60 seconds/3). So every hour you inhale 1,200 times. Multiply that by 24 to get the number of times you inhale per day.
<span>The name of the covalent compound N2O5 is dinitrogen pentoxide, more commonly known as nitrogen pentoxide. Did you mean just N2O5?</span>