yslrosario3718 yslrosario3718

07-02-2020
Geography

contestada

A spruce tree trunk has been found preserved in glacial till. Samples taken from the trunk have been found to contain approximately 12.5% of Carbon-14. How many half-lives have elapsed since this tree was buried?

Respuesta :

abdulismail72 abdulismail72

08-02-2020

Answer:

three half-lives

Explanation:

Converting 12.5% to decimal gives 0.125

If one half life is 0.5.

0.5*0.5*0.5 gives 0.125

Thus 3-half lives has been elapsed

Answer Link

Otras preguntas

A Group of students performing an experiment collect Euglena samples from a pond and keep them in darkness in a vessel containing pond water which would be the

Why do citizens have a responsibility to participate in matters of the government? a.It is mandatory in order to demonstrate patriotism. b.It is the law for pe

Which of the following is a single replacement reaction?Fe2O3 + 3H2O yields 2Fe(OH)3 FeS + 2HCl yields FeCl2 + H2S 2Mg + O2 yields 2MgO Mg + 2HCl yields MgCl

How does a reader determine if a narrator is credible based on consistency of information?

Energy in most ecosystems must flow through autotrophs because ______. a. only autotrophs can convert solar energy into chemical energy b. autotrophs are simple

In his Farewell Address, Washington warned against permanent foreign alliances and A. the power of the moneyed interests. B. the unjust oppression of black slav

If you drop a stone into a hole drilled all the way to the other side of Earth, the stone will _____. A. speed up until it gets to the center of Earth B.

What is the participial phrase in the following sentence? Noted for her beauty, Helen of Troy was to become a well-known character in Greek mythology.

Write an algebraic expression for the word phrase ; the quotient of r and 12 . A . r . 12 b. r*12 C. r - 12 D r + 12

Power plants release sulfur dioxide and nitrogen oxides into the atmosphere, where they combine with water vapor to form a. acid precipitation b. ozone c. parti