alexandriabritt3672 alexandriabritt3672

04-06-2019
Chemistry

contestada

Radium-223 is a radioactive isotope with a half-life of 11.4 days. how long (in days) will it be before 87.5% of the sample has decayed?

Respuesta :

mohamedshuler mohamedshuler

04-06-2019

Answer:

9.975 days

Explanation:

87.5% of 11.4 is 9.975 you can see this by doing 11.4 * 0.875

Answer Link

Otras preguntas

True or false Slow movements of the mantle rock called radiation transfer heat in the mantle

15 POINTS! HELP PLEASE! which is an example of humans interacting with their environment? chose the best answer. a. A taxidermist was paid to stuff and mount f

Over time heat and pressure can change quartz into quartzite quartzite is A. An ingenious rock B. A metamorphic rock

help for 50 pointssssssssssssssssssssssssssssssssssssssssssssss

How does the title cobtribute to the ideas in the essay? Langyage advantage

How many atoms are there in 1.00 mole of KNO3? a. 1 atom b. 3.01 x 10^24 atoms c. 6.022 x 10^23 atoms d. 5 atoms

match each feature of an investment with the correct investment

0.4(2x-9)-0.6(4x+5)[tex]0.4(2x - 9) -0 .6(4x + 5)[/tex]

Please, someone help me. 3/4x-7=8

1-16x^12 factor completely