Honors chem, if someone could help me figure out how to work it that would be amazing. it's stoichiometry​

if you mean hydrogen and oxygen then water is the product

b. is the answer hoped i        

catya that's not even a b or c

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