I have a question Iam stuck on. I was wondering if i did the right calculations. Please let me know: Through decay, Chemical Q loses one-third of its mass every 7 years. Twenty-five years ago, a container of Chemical Q was buried. The EPA has just dug it up and found 1,000 grams remaining. How much Chemical Q was originally buried? 1000=(Q)(1/3)^(x/7) when x = 25 1000=(Q)(1/3)^(25/7) Q = 1000/(3)^(3/7)/81 Q = 50583??? I am not sure if I did this correct??