Question

neet students plz explain it...

other dont answer...

I knw the answer just need explanation
For 25 points .​

Answer 1

t1/2=2.5 hrs

initial concentration =160g

After 7.5 hrs means 3t1/2

$1half \: life = \frac{160}{2} = 80 \\ 2 \: half \: life = \frac{80}{2} = 40 \\ 3 \: half \: life = \frac{40}{2} = 20$

I HOPE THUS HELPS( ╹▽╹ )