One quantity recently measured is the ratio of Xe-129 to Xe-130 in some minerals. In what way do these two isotopes differ from one another? In what respects
are they the same?

The gas would begin to expand, and eventually the can would burst or explode.

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that  0.249 or 0.25  grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.

Answerlimiting reactant;