After 17.1 thousand years, what percentage of the original carbon-14 would be left in an organisms remains?

The 1/2 life of carbon 14 is 5730 years. After 5730 yrs there will be 1/2 of it left. After a second 5730 yrs there will be 1/2 of the 1/2 left or 1/4. Now 5730 + 5730 = 11460yrs. The total yrs considered is 17.1 thousand years or 17,100 years. 17,100-11460 yrs is 5640 yrs. 5640/5730=0.984. For a third 5730 yrs it would be 1/4 x 1/2 of the carbon 14 left, since the amount is diminished by 1/2 each time. So 0.984 x 1/2= 0.492. Since 1/4=0.250 then 0.492 x 0.250=0.123 carbon 14 left at 17,100 yrs. 

The half-life of carbon-14 is 5,730 years, which is a bit short. So, after 17,100 thousand years, there will 12.38% or 12.5% left in an organism’s remains. This is calculated by dividing 17,100 by 5,730 and this gives us a value of 2.98 or 3. So we can expect that after 17.1 years, carbon-14 is reduced thrice. From 100%, it becomes 50%, to 25% and then 12. 38% or 12.5%.

Answer:

a. energy is absorbed in the reaction.

explanation:

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.