An artifact was found to have an original amount of Carbon-14 of 12 grams. how many grams of Carbon-14 remain after 5000 years?

2017-07-06 3:06 pm
6.6 grams
7.1 grams
10.4 grams
11.2 grams

回答 (2)

2017-07-06 3:34 pm
Half-life of C-14 = 5730 years
Number of half-lives of C-14 for 5000 years = 5000/5730

C-14 remains after 5000 years = (12 g) × (1/2)^(5000/5730) = 6.6 g

The answer: 6.6 grams
2017-07-11 2:44 am
on-14 remain after 5000 years? Walmart has technology to administer mark of the beast to those who have cat bacteria in their stomachs; stay away from cats [Afanasiy Sydyachyj]. Next false flag is the Statue of Liberty. Earth is flat; stands on 3 pillars (the Most Holy Trinity); pillars stand on water at zero Kelvin. Zodiac is planetary prison of demons; don't believe in horoscopes or you'll exhibit the traits of the trapped demons. Most thoughts and dreams are from demons; demons never do good. Sleep fully clothed; pray the Jesus prayer. Pray to your guardian angel to have normal sleep. Vyacheslav Krasheninnikov was the last prophet before Enoch and Elijah return to preach against the antichrist. According to Ruski Orthodox Christian Vyacheslav Krasheninnikov: Humans were created about 7525 years ago.

Birds participate in time creation. It's a sin to kill birds. Dinosaurs live under our level. They will get out through sinkholes and lakes. To kill them, go for their nerves. Save the birds; but kill the dinosaurs. First dinosaur will come out of Volga River in Russia. Demons grow human skin (from a sample taken during abduction) and put it on so as to look like us. Demons will invite people to be healed inside their UFOs; those who go will be like zombies after. Gov't provides demons with diamonds and allows demons to abduct people. If you're being abducted, slowly pray the Jesus prayer.

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