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

The difference between the annual and semi-annual compound interest on a sum of money is Rs 482 at the rate of 20 % per annum for 2 years. Find the sum.

The radius of a circle is 3 cm. Find its area in terms of pi

Plssss help plssssss

Wages Expense Type of Account Appears on Which Financial Statement Normal Balance Is the Account Closed? A Expense Income Statement Credit Yes B Expense Income

Student grades on a chemistry exam were: 77, 78, 76, 81, 86, 51, 79, 82, 84, 99 Required: a. Construct a stem-and-leaf plot of the data. b. Are there any potent

Help please I’m not sure what the answer for this one is no need to explain

2.5: Một người nặng 72kg ngồi trên sàn treo nặng 12kg như hình vẽ. Hỏi người đó phải kéo dây với một lực bằng bao nhiêu để sàn chuyển động nhanh dần đều lên cao

Question 20 plz show ALL STEPS and hurry PLEASE

Geometry, please answer question ASAP

Find the value of the variable(s). (9x + 12) 3x (4y - 10)