kelseyyraee kelseyyraee

01-11-2016
Chemistry

contestada

How many milligrams remain of a 15.0 mg sample of radium-226 after 6396 years? The half life of radium-226 is 1599 years.

Respuesta :

kaity0001 kaity0001

01-11-2016

There are 4 half lives of radium-226 in 6396 years. 15.0 divided by half 4 times (15.0/2= 7.5, 7.5/2 = 3.75, 3.75/2 = 1.875) equals 1.875 mg of radium-226.

Answer Link

Otras preguntas

When factored completely the expression p^4-81 is equivalent to

One year there was a total of 58 commercial and noncommercial orbital launches worldwide. In addition, the number of noncommercial orbital launches was twomore

Is it illegal to be gay in united states?

What was true about African Americans in the military

Blood never leaves the blood vessels and does not exchange substances directly with cells. rather it exchanges substances with _______ _______, which then excha

What did James Madison and John Marshall have in common?

How did the development of farming change the lives of the first Americans?

Which type of financial institution typically has membership requirements? A

Quadratic equation: Your town wants to put a square fountain in the park. The fountain will have a sidewalk around it that is 4 ft wide. The total space that th

The partial negative charge at one end of a water molecule is attracted to the partial positive charge of another water molecule. what is this attraction called