Question

The graph below shows the radioactive decay of an isotope of uranium.



Based on the graph, what is the half-life of uranium?

50 million years

100 million years

4,500 million years

9,000 million years

Answer 1

how much time does it take for the sample to go from 100% to 50%?

Answer 2

i think 4500 million?

Answer 3

@JFraser

Answer 4

yup

Answer 5

thanks, can you help me with another one? @JFraser

Answer 6

I can try, no guarantees