moonlightgamermg moonlightgamermg

05-01-2017
Mathematics

contestada

Iodine-125 has a half-life of about 60 days.

How many milligrams of a 500 mg sample will remain after 300 days?

1. 0.6 mg
2. 7.8125 mg
3. 15.625 mg
4. 31.25 mg

Respuesta :

HomertheGenius HomertheGenius

02-12-2017

We know that Iodine - 125 has a half life of 60 days.
300 : 60 = 5 . It means that it was halved 6 times.
Therefore: 500 mg * 0.5^5 =
= 500 mg * 0.5 * 0.5 * 0.5 * 0.5 * 0.5 =
= 500 mg * 0.03125 = 15.625 mg
Answer: 3. 15.625 mg.

Answer Link

jessieallen946 jessieallen946

27-11-2021

Answer:

Step-by-step explanation:

15.625

Answer Link

Otras preguntas

Why did Constantinople’s fall to the Ottoman Turks in 1453 help spark the beginnings of the Renaissance in Italy?

Which is a true statement about the Federalists? They feared that Congress would become too powerful. They believed in a system of checks and balances. They f

Which of the following statements contain a variable? Check all that apply. A. Half the speed of the car. B. They scored 27 points. C. Eighty miles per

Imagine you are stranded on a deserted island with 400 individuals. Once you and the others have built some shelters and taken stock of the island, how would yo

Which sentence is punctuated correctly? 1. I am going home I intend to stay there 2. I am going home; I intend to stay there. 3. I am going home, I intend to st

Due to a leak, the amount of water in a pool is decreasing by 5858 gal every hour. What is the total change in the number of gallons of water in the pool after

Why was Joseph warned to go to Egypt? The wise men were spies sent by Herod and were going back to report to him. Herod ordered soldiers to kill all boy babies

1) 9f - 2 - 8f 2) -8 (-2-5z) + 7 3) 8r - r 4) 2-8k-6k 5) (-2r-6) 6) b+8b

The auditorium of the music center has 3 sections. Each section has 24 rows of seats. Sections A and C have 15 seats in a row. Section B has 20 seats in a row.

when the dead decay what is release in the soil?

Q&A Education