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

What did the Sumerians use to sign their names? A. a signet ring B. stamps and ink pads C. a thumbprint D. a cylinder seal

true or false: all atoms of an element have the same number of protons in the nucleus?

The sum of two consecutive integers is 37. Write an equation that models this situation and find the values of the two integers.

In 1952 over 4,000 people died due to a 5-day temperature plunge which trapped acid aerosols in the atmosphere in what major European city

Part of the process of the domestication of animals included selective breeding. Which of the following best describes selective breeding? breeding as many anim

if 1 is a solution to g(x)=0 what I'd the other solution

Solve the equation 8x-12=5+15

Use the following quote from Adam Smith to answer the question below: "It is not from the benevolence of the butcher, the brewer, or the baker that we expect ou

What were the Cold War fears of the American people in the aftermath of the Second World War? How successfully did the administration of Dwight D. Eisenhower ad

Which sentence uses correct punctuation? A-Dr. Anderson asked, “When is the awards ceremony going to begin”? B-Dr. Anderson asked “When is the awards ceremony g