Answer:
is the rate constant for this reaction.
It will take
to concentration to reach 12.5% of its original value.
Explanation:
A decomposition reaction follows first order kinetics:
Half life of the reaction = 
Rate constant of the reaction = k
For first order reaction, half life and rate constant are linked with an expression :


is the rate constant for this reaction.
Initial concentration of reactant =
= x
Final concentration of reactant after time t =
= 12.5% of x = 0.125x
The integrated law of first order reaction :
![[A]=[A_o]\times e^{-kt}](https://tex.z-dn.net/?f=%5BA%5D%3D%5BA_o%5D%5Ctimes%20e%5E%7B-kt%7D)

t = 1,734.31 years =
It will take
to concentration to reach 12.5% of its original value.
<span>The answer is 8. Hope this help!!!
</span>
It's Co just look at the periodic table
Answer:
the answer is c. their atomic masses are different clearly because an atom of gold has 79 protons and the atom can be divided multiple times. An atom of silver has an atomic number of 47. 47 electrons. Clearly different. Hope it helps :)
Explanation:
Answer:
90
Explanation:
gshhhshussussussjsuushhshjssuss