What is the main difference between planets and stars?

answer:

a star is a celestial body that produces its own light due to a reaction at its core. there are millions of stars. on the other hand, a planet is a celestial body that has a fixed course, otherwise known as an orbit. the orbit is the pathway that allows the planet to move around a star

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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