Nuclear physics Repost

1) An old wooden tool is found to contain only 11.9 percent of 14C that a sample of fresh wood would. How many years old is the tool?
2) A specimen taken from the wrappings of a mummy contains 7.02 g of carbon and has an activity of 1.34 Bq. How old is the mummy? Determine its age in years assuming that in living trees the ratio of 14C/12C atoms is 1.23E-12.
Please help

  1. 👍 0
  2. 👎 0
  3. 👁 52
  1. Wssu

    1. 👍 0
    2. 👎 1
    posted by Chris

Respond to this Question

First Name

Your Response

Similar Questions

  1. Nuclear physics

    1) An old wooden tool is found to contain only 11.9 percent of 14C that a sample of fresh wood would. How many years old is the tool? 2) A specimen taken from the wrappings of a mummy contains 7.02 g of carbon and has an activity

    asked by Sandhya on April 17, 2008
  2. chemistry

    Archeologists can determine the age of artifacts made of wood or bone by measuring the amount of the radioactive slope 14C present in the object. The amount of isolope decreases in a first-ordrr process. If 12.8% of the original

    asked by esme on September 8, 2014
  3. URGENT! Due soon and I used 8 of 10 attempts

    Archaeologists can determine the age of artifacts made of wood or bone by measuring the amount of the radioactive isotope 14C present in the object. The amount of isotope decreases in a first-order process. If 14.5% of the

    asked by Kayla on February 14, 2016
  4. Radioactivity

    1) An old wooden tool is found to contain only 11.9 percent of 14C that a sample of fresh wood would. How many years old is the tool? 2) A specimen taken from the wrappings of a mummy contains 7.02 g of carbon and has an activity

    asked by Sandhya on April 19, 2008
  5. Chem/Physics

    1. The half-life for the (first-order) radioactive decay of 14C is 5730 yr (it emits a β ray with an energy of 0.16 MeV). An archaeological sample contained wood that had only 72 percent of the 14C found in living trees. What is

    asked by Anne on October 15, 2008
  6. Chemistry

    A skull fragment found in 1936 at Baldwin Hills, California, was dated by 14C analysis. Approximately 100g of bone was cleaned and treated with 1 M HCl(aq) to destroy the mineral content of the bone. The bone protein was then

    asked by Sarah on May 21, 2009
  7. Physics Need help please

    An ancient wooden club is found that contains 270g of carbon and has an activity of 8.3 decays per second. Determine its age assuming that in living trees the ratio of 14C/12C atoms is about 1.3x10^-12? t= in years

    asked by Leila on May 7, 2013
  8. Chem/Physics

    Hi! I'm having lots of trouble figuring these two out.....if you could help that would be great- thanks!! 1. The half-life for the (first-order) radioactive decay of 14C is 5730 yr (it emits a β ray with an energy of 0.16 MeV).

    asked by Anne on October 15, 2008
  9. 9th grade Social

    What modern tools do these early tools resemble? 1.> Small sharp tipped tool which is made of bone. 2.> Roughly the size of arrowhead, the 1.5 inch tip of this hand held tool is made of flint, a very hard rock. the wooden handle

    asked by Alisha on September 7, 2008
  10. Chemistry

    The half-life for radioactive decay of 14C is 5730 years (it emits β-particles with energy of 0.16 MeV). An archaeological sample contained wood that had only 72% of the 14C found in living trees. What is its age?

    asked by Zoa on April 8, 2010

More Similar Questions