Chemistry - Redox Reactions - Standard electrode potentials - E° Calculations

8 questions on electrode potentials. Q1: 'E°cell = E°___ - E°___' (cathode, anode). Q2: 'Zn²⁺/Zn = -0.76V, Ag⁺/Ag = +0.80V. E°cell = ___' (+1.56V). Q3: 'If E°cell is positive, the reaction is ___' (spontaneous). Q4: 'The standard hydrogen electrode has E° = ___ V' (0.00). Q5: 'Fe²⁺/Fe = -0.44V, Ni²⁺