talithataylor talithataylor

03-05-2018
Physics

contestada

A 500g sample of Potassium-40 is left to decay radioactively. After 3.9 x 109 years, about how many grams of Potassium-40 are expected to remain? [The half-life of Potassium-40 is 1.3 x 109 years.]

Respuesta :

madolynb madolynb

07-05-2018

The answer is 62.5 grams

Answer Link

cendariuswalker cendariuswalker

09-05-2018

it is 62.5g i know for a fact i major and a teacher i'm science and math

Answer Link

Otras preguntas

HOW WOULD YOU BE ABLE TO IDENTIFY streptococci THROUGH A MICROSCOPE

Which formula represents an organic compound? ( l) CaH2 (3) H2O2 (2) C4H8 (4) P2O5

What are two rights of everyone living in the United States?

What force is thought to be an important cause plate tectonic motion ?

Name one right only for United States citizens.

The excitation of an electron on the surface of a photocell required 5.0 x 10 –27 J of energy. Calculate the wavelength of light that was needed to excite the e

What is the approximate height of the average adult in centimeters?

Which condensed structural formula represents an unsaturated compound? (1) CH3CHCHCH3 (3) CH3CH3 (2) CH3CH2CH3 (4) CH4

Who was President during World War I?

Name one U.S. territory