After 3 half-lives, 125 grams of the parent isotope will remain.
Answer:
itz elementary school in new Jersey city and I was in school for a little while I had a phone and a couple days later and I'm going next week and I'm gonna go back and watch Netflix and get some headphones and a lot more like a child and a couple more like this
Answer: hydrolysis oxidation acidification
Explanation:
they break down, dissolve, or create new elements