shawntelmartin77 shawntelmartin77
  • 17-12-2021
  • Physics
contestada

If the half-life of iodine-131 is 8 days, how much of a 5.00 sample is left after 32 days?

A) 0.31

B) 2.5

C) 1.25

D) 0.62

Respuesta :

obinnafavour66
obinnafavour66 obinnafavour66
  • 18-12-2021

Answer:

Option A, 0.31

Explanation:

n = Time taken / half life

n = 32/ 8

= 4

Remaining fraction = 1/2^n

= 1/2⁴

= 1/16

Amount of iodine-131 left = 1/16 × 5

= 0.3125

Answer Link

Otras preguntas

the commander if the united nations forces in korea was
Uestion 24 a 25-day-old infant is admitted to the hospital after 3 days of vomiting, and pyloric stenosis is diagnosed. what are the important nursing assessmen
How do you find the x-intercepts of[tex]y = 12x + {7x}^{2} [/tex]Please help!!
what does tocchiamo con. ,mangiamo con , guardiamo con ,abbracciamo con , baciamo con , leggiamo con and camminiamo con mean in italian???
Which of the following Cold War practices had a direct impact on many American citizens? a. Blacklisting b. Duck and cover drills c. Gaining allies d. Buildin
Find the surface area of the equilateral triangular pyramid.
answer for #1? thanks
How many different 7-card hands include the ace and king of spades?
A major software corporation has decided that its operating system is too difficult for the average user. Who should they hire to make the system easier to unde
In humans having wet earwax is a dominant trait. Having dry earwax is recessive. A Man has two recessive alleles. What is his phenotype?