What should the ^14_6C content (in percent of y0) of a fossilized tree that is claimed to be 3000 years old?

The current mass fraction of should be approximately 68.8 percent.

Explanation:

is a radioactive isotope with a halflife of 5568 years. The decay of any radioisotope is modelled after the following ordinary differential equation:

Where:

- Current mass of the isotope, measured in grams.

- Time constant, measured in years.

The solution of this equation is of the form:

Where:

- Time, measured in years.

- Initial mass of the isotope, measured in grams.

The time constant can be found as a function of halflife ():

If and , the mass fraction of is:

The current mass fraction of should be approximately 68.8 percent.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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