Answer:
I would say A
Explanation:
our ancestors are the people that lived long before us
Answer:this is thermal decomposition
Explanation:
the light green copper carbonate when heated it gives copper oxide ( a black residue) and carbon dioxide is evolved
Answer:
The standard cell potential of the reaction is 0.78 Volts.
Explanation:

Reduction at cathode :
Reduction potential of
to Cu=
Oxidation at anode:

Reduction potential of
to Fe=
To calculate the
of the reaction, we use the equation:

Putting values in above equation, we get:

The standard cell potential of the reaction is 0.78 Volts.
Answer:
please is this a question or answer I don't understand