The answer will be D because the reaction is what's first(A) and then it is the product that comes out.
Answer:
D
Explanation:
Reduction is a gain of electrons, oxidation is a loss of electrons, and electron transfer reactions are also called redox reactions.
this link might be helpful
https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Supplemental_Modules_(Analytical_Chemistry)/Electrochemistry/Redox_Chemistry/Oxidation-Reduction_Reactions
Reactivity is not a physical property because it's a characteristic of a chemical element or compound and is involved in chemical process.
Answer:
125000
Explanation:
Because it is halved and halved again.
