Convert a temperature of 89.1 ˚F to its equivalent temperature in ˚C. Express your answer to the correct number of significant figures.

elements

explanation:

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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

answer seismograph;