Suppose you could watch radioactive atoms decay. it would probably get quite boring as time went by. why?

a. the initial decay rate is very fast, but the decay rate decreases over time.
b. due to randomness, the last couple of radioactive atoms may take a long time before they become nonradioactive.
c. the pattern becomes very predictable.
d. only a few radioactive nuclei are left to decay, so fewer and fewer atoms decay.
e. the rate of decay decreases with each half-life cycle.
f. the probability that an atom will decay is reduced with each half-life cycle.

the answer should and most definitely be D.

Explanation: I mean think about it after a while only a few radioactive nuclei are left which means it will dye down after a while which also makes it very boring hope this helps :)

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .