Answer:
temperature and mechanism
Explanation:
Arrhenius equation gives us the idea about the factors affecting equilibrium constant.It is given as:
<h3>where k=equilibrium constant
A=pre-exponential factor
=Activation energy
T=temperature
R=Universal gas constant
<h3>It is clear that k depends only on temperature and activation energy.</h3>Activation energy of a reaction is different for different mechanisms or pathways.Hence k depends on both temperature and mechanism.
Answer:
12.213 minutes will be taken for 120 g-Thalium-208 to decay to 75 grams.
Explanation:
Radioactive isotopes decay exponentially in time, the mass of the isotope (), in grams, is described by the formula in time (
), in minutes:
(1)
Where:
- Initial mass of the isotope, in grams.
- Time constant, in minutes.
In addition, the time constant associated with the isotope decay can be described in terms of half-life (), in minutes:
(2)
If we know that ,
and
, then the time taken by the isotope is:
12.213 minutes will be taken for 120 g-Thalium-208 to decay to 75 grams.