krad6930 krad6930

26-05-2018
Chemistry

contestada

If the half life of a radioactive isotope is 4000 years, how much would be left in a fossil after 4000 years

Respuesta :

BeataVer BeataVer

27-05-2018

Since the half life of the radioactive isotope is 4,000 years, after 4,000 years the amount of the isotope would decrease by half. (Hence the name, half life.) So, after 4,000 years, there would be half of the isotope left in the fossil.

Answer Link

Otras preguntas

Why does the poet believe that "Whole libraries that no one/got around to writing" is "More disturbing than book ashes?"

y=-1/9 (6)+5 solve the equation

Why do doctors prefer to remove tumors rather than treat them with radiation and chemotherapy? A. Radiation and chemotherapy are more expensive than surgery.

what was the Federalist and who was the Publius?

Mel had $35 cash and withdrew $200 from his bank account. He bought a pair of trousers for $34.00, 2 shirts for $16.00 each, and 2 pairs of shoes for $24.00 eac

What would happen if Earth’s axis did not tilt by pointed straight up and down?

.700=(x)(x)/(.160-x)

At 3pm, the temperature outside was 5 1/5 degrees Fahrenheit. The temperature then fell steadily by 2 1/2 degrees per hour for the next four hours. What was the

The sum of two consecutive intergers is -87 find two intergers

I don’t know how to do question 3