Please help! The effects of acid mine drainage may vary drastically between dry and wet seasons. If a stream with AMD contamination undergoes considerable evaporation, explain how this will affect the pH of the stream. Will this affect the precipitation of Fe(OH)3 (assuming adequate limestone is present)? If so, explain how. Explain how temperature changes could affect the precipitation of Fe(OH)3.

i think that the answer is c

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.

i believe the answer is 5,000