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

why do plant cells that transport water against the force of gravity contain many more mitochondria that other plant cells

I'm need 3 slimgrease live

The record high temperature is 41° the record low temperature is -16° what is the difference in the record temperatures

helpppppppppppppp.....

"Since a self-funded plan may or may not be insured, ultimately who retains liability for all expenses incurred?"

Sometimes people get caught in a "downward spiral," a case in which something leads to a result which in turn leads to more of the original thing, bringing on m

As urbanization increases and natural soil surfaces are covered, the groundwater supply is reduced due to?

A client's head protrudes during a pulling assessment. Which of the following muscles should be stretched?

When walking or jogging on the shoulder of a roadway that does not have sidewalks and that is not within a business or residential district, a pedestrian must t

Given the rectangle below with length 8 and width 6 a) construct the midpoints of all four sides of the rectangle. b) connect the midpoints to form another qua