Help help please Do you think the pulse measurements you made are completely accurate?why or why not explain

Heya dearfirst love doesn't matter what the it's just happen so we cannot say that minor in love with someone over 18 years old

What are the statements?

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.

Ch3cooh i think this is the answer