Severe weather can occur along cold fronts.

a) true
b) false

since electrons are negative the answer is neagtaive

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

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )