Answer:
The reaction that takes place in an electro-chemical cell is the Redox reaction, a type of reversible reaction combining both oxidation and reduction reactions.
Some elements have isotopes which have a different number of neutrons, and this means they have different masses.
Answer:
100 °C, because it is the boiling point of water.
Explanation:
12➡6➡3➡1.5
① ② ③
3 half life = 252
half life = 84days