B. A redox reaction occurs in an electrochemical cell, where silver (Ag) is oxidized and nickel (Ni) is reduced. (5 points)
i. Write the half-reactions for this reaction, indicating the oxidation half-reaction and the
reduction half-reaction. (1 point)
ii. Which metal is the anode, and which is the cathode? (1 point)
iii. Calculate the standard potential (voltage) of the cell. (2 point)
iv. What kind of electrochemical cell is this? Explain your answer. (1 point

See explanation

Explanation:

i) Oxidation half-reaction:

2Ag(s) > 2Ag^+(aq) + 2e

Reduction half-reaction:

Ni^2+(aq) + 2e > Ni(s)

ii) Ag is the anode while Ni is the cathode

iii) E°cell = E°cathode - E°anode

E°cell = (-0.25) - (0.80)

E°cell = -1.05 V

iv) This is an electrolytic cell since the cell reaction is non spontaneous.

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

12 is it do you think so