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

1 point4. What is the figure of speech used in the sentence below? The leopardruns as fast as the wind. 'metaphorsimileonomatopoeiaalliteration

HEYY:) HELP TY LUVSSS

During fiscal year 2012, Dioubate Cie earned $10,000 of interest revenue on an investment in a tax-free municipal bond. Which of the following items would be in

Can someone please check if this is correct?

click the picture below and solve

Machines become more efficient when ______ is reduced.

What is the list of verbs that are followed by the gerund and the one of those followed by the infinitive?

Hudson is having his car repaired. The mechanic said it would cost at least $425 for parts and labor. The cost of the parts was $200 and the mechanic charges $7

What is the surface area of a cylinder with a radius of 5 and a height of 8? round to the nearest 10th

WILL GIVE U BRAINLIEST ABCD is a rectangle. AB = x + 7, BC = 2x + 19. What is the CD? A. 2x + 133 B. X + 7 C. 5x + 38 D. 2x + 14