tiffy9066 tiffy9066

03-05-2018
Chemistry

contestada

The half-life of cobalt-60 is 5.20 yr. how many milligrams of a 2.000-mg sample remain after 10.50 years?

Respuesta :

mkryukova19 mkryukova19

03-05-2018

final amount =initial anount *(1/2)^(t/half life)

final amount =2.000 mg *(1/2)^(10.5/5.20) = 0.493 mg remain after 10.5 years

Answer Link

Otras preguntas

Gregg subtracted some number x from 47, then multiplied the result by two, subtracted 15 and got 45. What was Gregg's number? (PLEASE ANSWER WITH WORK, THANKS)

Irvan bought a drink for $1.90, a sandwich for $ 2.25, and an apple for $.75. What is the total amount of money he spent

If we have the curve , find the y value and the slope of the curve when x = 9. y = 3 slope = your answer cannot be understood or graded. more information hence,

from the lesson, what could workers do to win higher wages and better working conditions

Which of the following is FALSE about protein molecules? A. Protein molecules perform many different functions in the body. B. Their function is a result of the

Which of these describes a slide transition

A and B are vertical angles. If A = 4x - 10 and B = 6x - 30, find mA.

Algebraic expression of 25 less than a number d

Brandon steals Frank’s watch. Brandon is caught by the police. What kind of court will this matter be tried in? a. Civil court b. Criminal court c. Appellate

Which feature is most important for a chemical storage area?