Expert answer:Carbon-14 Dating Question
Expert answer:Someone at
Tesla stole your idea for a better electrolyte solvent and got all
the credit. You decide to get out of the cutthroat battery industry
and try nuclear chemistry. You get a job in the bowels of the
Smithsonian Institute performing radiometric dating. Do some research
to become familiar with the job before you start. Write a review
about carbon-14 dating that includes the following subtopic.Use
the following guidelines for your review.
Meets the
100 word minimum requirement for each subtopic.
Images
need to be referenced, even if you created them.
Entry is
written in a formal manner, with no use of text messaging
“shorthand,” slang, or similar.
Only
reliable references are used and all quoted data is referenced
properly with correctly formatted citations. Do not plagiarize!a. A review of
the principles of carbon-14 dating, including the nuclear reaction
and the limitations on how far back carbon-14 dating can reliably
measure the age of something. b. A rare find of carbon containing soft tissue (biological tissue,
such as proteins) in a T-rex dinosaur fossil bone that is thought to
be 65 million years old has recently been discovered by
paleontologist Mary Schweitzer (Fields 2006). You have been asked to
analyze a sample of the tissue for carbon-14 dating. The activity of
the sample was found to be 8 x 10-5 disintegrations per
second. An equal mass of fresh sample of human tissue was found to
be 15.200 disintegrations per second. The half-life of carbon-14 is
5700 yr. Calculate the age of the dinosaur tissue from the data you
acquired. c. Is the
date you calculated above valid for this type of analysis? Why? d. Read the paragraph below. Does your finding support, refute, or not
do either for Creationist theory? Explain why.
“Young-earth
creationists also see Schweitzer’s work as revolutionary, but in an
entirely different way. They first seized upon Schweitzer’s work
after she wrote an article for the popular science magazine Earth in
1997 about possible red blood cells in her dinosaur specimens.
Creation magazine claimed that Schweitzer’s research was “powerful
testimony against the whole idea of dinosaurs living millions of
years ago. It speaks volumes for the Bible’s account of a recent
creation.”
Fields,
Helen. “Dinosaur Shocker.” Smithsonian.com.
Smithsonian Institution, 01 May 2006. Web. 14 July 2017.
http://www.smithsonianmag.com/science-nature/dinosaur-shocker-115306469/.e. The T-rex soft tissue needs to be extracted with a strong ammonia
buffer. Calculate how many grams of sodium hydroxide you need to add
to one liter of 0.75 M ammonium chloride to prepare a pH 9.5 buffer
solution. (pKb of ammonia = 1.8 x 10-5)
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