I believe the most harmful substance would be element C, this is because element C has a very long half life therefore it has a very slow rate of a decay. Half life of a substance it the time taken for substance to decay to half its original mass or amount.
The name of that compound would be ammonium phosphate.
Explanation:
The Absorption of Light by Chlorine, Bromine and their Gaseous Mixtures
I'm not quite sure but I think if you field the corner or cut it it would physically change it while not creating something new (chemical change).
Answer:
0.052636002587839 moles
Explanation:
im not sure so sorry if u get it wrong...
