joselina joselina

22-05-2016
Mathematics

contestada

how much of a radioactive kind of bismuth will be left after 40 min if the half life is 20 min and you start with 960 grams?

Relax

Respuesta :

SmarticalParticals SmarticalParticals

22-05-2016

If the half life is 20 minutes, then in 40 minutes there is 2 half lives. At the end of Each half life, you will have 1/2 of the sample remaining. So...

After 20 min you have

960/2 = 480

After 40 minutes you will have

480/2 = 240 grams

Answer Link

Otras preguntas

Suppose when a television assembly line runs for 6 hours comma it produces 120 televisions.a television assembly line runs for 6 hours, it produces 120 televisi

If drops of water are subdivided to the ultimately smallest drops possible, what is the smallest particle of water that retains the chemical and physical proper

What is the answer to y=3x-1/5

How can artists suggest volume with light?

According to the circumplex model of emotions, high-activation negative emotions include being:

Prove that, in a right triangle with a 15° angle, the altitude to the hypotenuse is one fourth of the hypotenuse.

ALL nouns are also: Question 19 options: proper common names actions

Which of the following is a business organization based on the belief that if individuals work together, they can help benefit one another? A. Cooperative B. La

Defensive proteins are manufactured by the _____ system. defensive proteins are manufactured by the _____ system. digestive cardiovascular immune nervous integu

Solve by elimination 5x+4y = 12 3x - 3y = 18 Please help solve and provide steps.