kingdesto9789 kingdesto9789
  • 02-08-2022
  • Chemistry
contestada

How many half-lives have passed in a sample that originally contained 5000 parent isotopes but now has only 625?

Respuesta :

jsimpson11000 jsimpson11000
  • 02-08-2022

Answer:

3 half lives

Explanation:

5000 * (1/2)^n  = 625           where n = number of half lives

log ( 625/5000) / log(1/2) = n  = 3

5000         2500     1250      625  

Answer Link

Otras preguntas

Determine the number of solutions for each quadratic. 1.) 4x^2-3x+4=0 2.)9x^2-12x+4=0
Mr. SMITH had 4 daughters, each daughter had a brother ... How many sons does Mr. Smith have?
Please answer the question in the image below ASAP
Desribe the structure of amino acids including what makes amino acids different from each other
Which expression is equivalent to 9(x + 4)? A. 36x B. 13x C. 13+9x D. 9x+36
What is the measure of B?
PLEASE PLEASE PLEASE HELP PLEAS :( THE SECOND ONE JEJEJEJDD PLEASEEEEEE
which sentence best describes a scene of rising action of beowolf?
In your own words, what does it mean when something has an extrinsic value? What is anexample of an item having extrinsic value?Answer using complete sentences.
Which of the following is NOT a trig function OR an inverse? a COT b TON c SIN d COS