gabrielperez184108 gabrielperez184108

04-06-2021
Chemistry

contestada

A sample of a certain isotope has an initial activity of 40,000 cpm. After 24.8 days, the activity is 2500 cpm. What is the half life of the isotope?

Respuesta :

agbliyah agbliyah

04-06-2021

Answer:

6.2 days

Explanation:

initial activity = 40,000 cpm

one half-life = 20,000 cpm

two half-lives = 10,000 cpm

three half-lives= 5,000 cpm

four half-lives = 2500 cpm

24.8 days/4 half-lives = 6.2 days/ half-life

Answer Link

Otras preguntas

Evaluate ƒ(x) when x = -10 A. 16 B. No solution C. -7 D. -24

What is the source of carbon 14 in our environment ?

what's the volume of the cylinder

Which is the best example of Newton's first law of motion

What was the wealth of Haiti based on in the 18th and 19th century?

Simplify the expression the root of negative sixteen all over the quantity of three minus three i plus the quantity of one minus two i..

a(n)=-5+6(n-1) find the 12th term

Please help easy math Oliver needed to build 10 chairs to go with a dining room table that he had built. At the start of the second day he had completed 4 chai

how can you perform math and physics and what you should do to catch up

We get our paychecks on Friday and I always need mine. What is the word mine in this sentence? Subject, Direct Object or Predicate Nominative