gabrielperez184108 gabrielperez184108

04-06-2021
Chemistry

contestada

A radioactive sample has an activity of 450 cpm three half lives after the initial activity was determined. What was the original activity?

Respuesta :

agbliyah agbliyah

04-06-2021

Answer:

original activity is 3600 cpm

Explanation:

3 half-lives = 450 cpm

2 half-lives = 900 cpm

1 half-life = 1800 cpm

answer = 3600 cpm

Answer Link

Otras preguntas

Jack bought a new suit that originally cost $176.85. He had a coupon for 30% off the original price. After using the coupon, he had to pay 6% in sales tax. How

What two pieces of architecture does Justinian use to showcase his power and faith?

A music player was marked down by 1/4 of the original price. If the sales price is $128, what is the original price? If the music player was marked up by ½ befo

Here is a riddle: The sum of two numbers is less than 10. If we subtract the second number from the first, the difference is greater than 3. Write a system of i

3(x-3)= -9+3x no solution, one solution, or infinitely many solution?

Evaluate |a + b - c|, given a = 5, b = -3, and c = -2.

HELP PLEASE AND THANK YOU

Larissa rolls to number cubes each with the numbers one through six. Larissa adds the numbers that appear on the role. Which 2 sums have an equal chance of occu

can someone help with the equation(s)?

PLEASE HELP Case Study: John is a 15-year-old whose mother was killed by his father two months ago. His mother had been abused by John’s father for years and wa