During the day in the mountains, the wind tends to blow because the mountainside gets heated than the valley below.

hey your not cool]      

catya your not at all which answer i've seen you do this on another question!

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l