Explanation:
It is given that possible number of ways the Cl and Br can be absorbed initially are 100.
S, possible number of ways by which Br can be desorbed is as follows.

Now, we will calculate the change in entropy as follows.

where,
= Boltzmann constant = 
= change in entropy
Therefore, we will calculate the change in entropy as follows.

= 
= 
= 
Thus, we can conclude that the change in entropy is
.
The standard heat of formation is the energy change that occurs when 1 mole of a substance is made from its elements in their standard states ( most stable form of the element at 1 bar of pressure and the specified temperature, usually 298 K or 25 degrees Celcius)
E.g for MgCO3
Mg (s) + C (s) + 3/2 O2 (g) = MgCO3
Answer:
The value is 
Explanation:
From the question we are told that
The mass of saxitoxin is 
The volume of water is 
The osmotic pressure is 
The temperature is 
Generally the osmotic pressure is mathematically represented as

Here R is the gas constant with value

and C is the concentration of saxitoxin
So


Generally the number of moles of saxitoxin is mathematically represented as

=> 
=> 
Generally the molar mass of saxitoxin is mathematically represented as

=> 
=> 
Answer:
Option A. 1 0n
Explanation:
Details on how to balanced the equation for the reaction given in the question above can be found in the attached photo.