Why might a scientist repeat an experiment if he/she did not make a mistake in the first one? an experiment should be repeated

a. they are both space stations

happy to

pls mark as brainliest.

thats how its supposed to be

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