HELP ASAP PLEASE I LOVE YOU ILL GIVe YOU What is the voltage of a galvanic cell made with magnesium (Mg) and gold
(Au)?
A. -0.54 V
B. 4.2 V
C. 0.54 V
O D. -4.2 V
SUBMIT

C

Explanation:

I'm not sure how to explain this

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