Answer:
3 half live have passed.
Explanation:
After 1 half-life , 500 g of the parent isotope will remain. After 2 half-lives , 250 g of the parent isotope will remain. After 3 half-lives , 125 g of the parent isotope will remain.
Three dimensional
the 3 dimensions of an object are Height, Width and Depth.
it was Spain
Answer: I’m sorry I don’t speak that language.
d little to medium
because it is extremely cold
