Chemistry, 29.03.2021 19:20 kylemartinez13
Archeologists near the Dead Sea in 1998 reported the discovery of a substance made from collagen that they believe ancient people used as glue. A sample of newly prepared collagen exhibits 15.2 disintegrations per minute per gram (15.2d/min/g) of carbon. The 14C decay rate for the sample of ancient glue was found to be 5.60d/min/g. What is the age of the glue. Disintegration of 14C is a first order process with a rate constant 1.209 x 10-4 year-1. a. 8000yrs. b. 7985yrs. c. 8437 yrs. d. 6575yrs. e. 10002yrs.
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Chemistry, 22.06.2019 03:00
Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife
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Chemistry, 22.06.2019 13:00
16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.
Answers: 2
Chemistry, 22.06.2019 14:20
Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments
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Archeologists near the Dead Sea in 1998 reported the discovery of a substance made from collagen tha...
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