A big blue ball! You can see a big blue ball. Select the two properties of light that enable you to see the ball. A)energy and wavelength)reflection and absorption)reflection and refraction)absorption and transmission

Reflection and absorption

Explanation:

When a light falls on an object,some light waves are absorbed by the object,and the rest are reflected back.This reflected light is what make us see the object.

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