Answer : The solubility of this gaseous solute will be, 
Explanation :
First we have to calculate the concentration of solute.

Now we have to calculate the Henry's law constant.
Using Henry's law :

where,
C = concentration of solute = 
p = partial pressure = 27.59 kPa
= Henry's law constant = ?
Now put all the given values in the above formula, we get:


Now we have to calculate the solubility of this gaseous solute when its pressure is 79.39 kPa.



Therefore, the solubility of this gaseous solute will be, 
I think the answer is true. These beaches are composed mostly with sandstone which is mainly sand-sized minerals. These grains is made up of quartz and feldspar since these are the most common mineral found in Earth.
Answer: -
Thus Colligative properties depend most on concentration of solute particles.
Explanation: -
Colligative properties are the properties of a solution that depends only on the number of particles of the solute present in the solution and not on the identity of the solute.
The number of solute particles present per unit volume in a solution is referred to as the concentration of solute particles.
Thus Colligative properties depend most on concentration of solute particles.
Answer:
Explanation:
The octet rule does not always refer to a stable arrangement of eight valence electrons because there are some element that do not have eight valence electrons yet they are stable. for example;
i) Helium, It has two valence electrons and it is a stable gas.
ii) Boron triflouride (BF3); it has six valence electrons (deficit valence electron) yet it is also stable.
iii) Phosphorus pentachloride (PCl5); it has more than eight valence electron and it is also stable.
For these few reasons it is not always advisable to say octet arrangement refer to stable eight valence electrons.