A graduate student is working in his lab. In order to continue his experiment, he needs to calculate the total number of ions in 4.81 mol of SrF2 . Calculate the total number of ions in the sample. How many ions are in the sample

Ais the correct answer

What do you mean by that? like the contents? the thc level?

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.

The answer is a its density hope i