If an egyptian mummy contained 10 g of carbon-14 when it was buried and now has 5 g, how old is the mummy?
how many grams of nitrogen -14 were produced during that time?
in another six thousand years, how much carbon-14 will remain?
what would be the total amount of nitrogen-14 produced in twelve thousand years after the burial of the mummy?

Age of mummy when 5 g carbon-14 remains = 6000 years

nitrogen-14 produced during this period = 5 g

Mass of Carbon 14 in another 6000 years =  2.5 g

Amount of Nitrogen-14 in 12 thousand years =  7.5 g

Explanation:

Carbon dating is a method used for age determination by analyzing the decay  

of carbon-14 to nitrogen-14

one neutron in carbon-14 splits into one proton and electron

half life (time to decay half of the total mass) of carbon-14 is 5730. here we can approximate this as 6000 years.

initially there is 10 g carbon-14 now remains 5 g that means 1 half-life has passed so,

Age of mummy when 5 g carbon-14 remains = 6000 years

the decayed C-14 is converted to N-14 ( mass of electrons or β particles are negligible) so,

nitrogen-14 produced during this period = (10 - 5 = 5 g

in another 6000 year one more half life will pass the mass of C-14 will further halve ,

Mass of Carbon 14 in another 6000 years =  5 / 2  = 2.5 g

so, Nitrogen remains after 12000 years = 10 - 2.5 = 7.5 g

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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