Explanation:
Gases: more space therefore meaning that particles in the gas have the highest Kinetic energy therefore moving faster all around.
Liquid: they have more kinetic energy than liquid,but they have some space for movement so they collide each other quicker due to lack of space.
solids: They have least kinetic energy as they have no space at all meaning particles can move around and only just vibrate against each other.
Answer:
D
Explanation:
water freezes in cracks in rock
Answer : The pH of the solution is, 9.63
Explanation : Given,
The dissociation constant for HCN = 
First we have to calculate the moles of HCN and NaCN.

and,

The balanced chemical reaction is:

Initial moles 0.1116 0.0461 0.08978
At eqm. (0.1116-0.0461) 0 (0.08978+0.0461)
0.0655 0.1359
Now we have to calculate the pH of the solution.
Using Henderson Hesselbach equation :
![pH=pK_a+\log \frac{[Salt]}{[Acid]}](https://tex.z-dn.net/?f=pH%3DpK_a%2B%5Clog%20%5Cfrac%7B%5BSalt%5D%7D%7B%5BAcid%5D%7D)
Now put all the given values in this expression, we get:


Therefore, the pH of the solution is, 9.63