To prepare 100mL of .4 M HCl solution from a stick solution what do you need to do

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

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