Question

if u can than solve it​

Answer 1

❤HLO ❤mate❤

N / No = (1/2)^t/T^1/2

= (1/2)^10/2.5

= (1/2)^4

= 1/16

material reduced = 1/16 g

тℏᾰℵкṧ

Answer 2

Hello!!

Answer: 120 days

Explanation--

Half-life (t½) is the amount of time required for a quantity to fall to half its value as measured at the beginning of the time period.

In this question (t½) of isotope is 30 days, which means that after 30 days half of the sample would have decayed and half would be left as it is.

After 30 days ( first half life) 120 /2 = 60 g decays and 60 g remains left.

After another 30 days ( two half lives or 60 days) 60 /2 = 30 g decays and 30 g remains left .

After another 30 days ( three half lives or 90 days) 30 /2 = 15 g decays and 15 g remains left.

After another 30 days ( four half lives or 120 days) 15 /2 = 7.5 g decays and 7.5 g remains left.

After four half lives or 120 days , 7.5 g of the isotope will be left.

So,the answer is 120 days.

Hope it helps you