A fossil was analyzed and determined to have a carbon-14

Assignment Help Chemistry
Reference no: EM13673827

All living things contain carbon. Most of this carbon is stable carbon-12. Nevertheless, a small percentage will be carbon-14, a radioactive isotope of carbon that decays with time. As living things eat and breathe, carbon is constantly recycled as well as therefore the percentage remains constant. It's not until death that the percentage of carbon-14 will begin to diminish due to decay. Consequently, it is extremely easy to find out how long a fossil has been dead. The half-life of C-14 is 5730 years.

A fossil was analyzed and determined to have a carbon-14 level that is 64.0 % that of living organisms. How old is the fossil?

Reference no: EM13673827

Questions Cloud

A sufficient amount of pbcl2(s) precipitate to be visible : Given the Ksp values for PbCl2 of1.6*10-5 at 25oC and 3.3*10-3 at80oC, if 1.00mL of saturated PbCL2(aq) at80oC is cooled to 25oC,will a sufficient amount of PbCl2(s) precipitate to be visible. Presume that you can detect as little as 1 mg of the s..
State- ethylene glycol, methanol, and formaldehyde : Which of the subsequent molecules would be expected to form hydrogen bonds in the liquid or solid state- ethylene glycol, methanol, and formaldehyde
Compute the percent by mass of iron in the ore : A sample of iron ore weighing 0.2370g was dissolved in an excess of a dilute acid solution. All the iron was first converted to Fe(II) ions. The solution then required 23.30mL of 0.0212 MKMnO4 for oxidation to Fe(III) ions. Compute the percent by ..
Explain how long would it take in seconds for the no2 : Specified that the half-life of this reverse reaction is 52sec when the initial concentration of NO2 is 2.00M, Explain how long would it take in seconds for 80% of the NO2 to decompose
A fossil was analyzed and determined to have a carbon-14 : All living things contain carbon. Most of this carbon is stable carbon-12. Nevertheless, a small percentage will be carbon-14, a radioactive isotope of carbon that decays with time. As living things eat and breathe, carbon is constantly recycled a..
Explain what is the ph after the addition of hcl : A 20.0mL sample of 0.20 M sodium acetate is titrated with 0.11 MHCl (aq). Explain what is the pH after the addition of 50.0 mL HCl(aq). (Kbof CH3CO2-= 5.6 ´ 10-10)
New ac­count executives have been at recruiting clients : New ac­count executives have been at recruiting clients.
Define and include a scheme for the mechanism of action : In the halo form reaction, once the first alpha-hydrogen atom is replaced by a halogen atom, all successive hydrogen is more effortlessly substituted until the trihalospecies is obtained. Define and include a scheme for the mechanism of action.
Legal requirements of fair pay programs : Legal Requirements of Fair Pay Programs

Reviews

Write a Review

Chemistry Questions & Answers

  Find out the activation energy for the reaction

determine the activation energy (in kJ/mol) for the reaction. Note that the reaction is "3/2" order in CH3CHO so k has the units of 1/M1/2 s. Strategy: consider the Arrhenius equation written as a linear equation.

  Compute the molar solubility of fe

Calculate the molar solubility of Fe(OH)2 in a buffer solution where the pH has been fixed at the indicated values. Ksp = 7.9 x 10-16.

  Describe the changes in solubility

Using structural formula, how would you write the chemical reaction which explains how the product of the acidification reaction reacts with OH-. How would this explain the changes in solubility?

  Explain what is the new freezing point of the water

If a solution of sea water was found to have a molarity of .26 m, what is the new freezing point of this water? (Kf = 1.86 degrees C/M)

  Spectroscopy to distinguish between the two compounds

Cyclohexene as well as 2-hexyne both have the molecular formulaC6H10. How would you use infrared spectroscopy to distinguish between the two compounds

  Explain what is the resulting ph of koh

What is the resulting pH when .005 moles of KOH is added to .1 L of buffer solution that is .100 M in H2PO4- and .100 m HPO4^2- and the Ka2 = 6.2x10^-8

  Explain how many moles of oxygen were collected

A volume of 550mL of gas was collected over water at 21oC and an atmospheric pressure of 743 Torr. The vapor pressure of water at 21oC is 19 Torr. How many moles of oxygen were collected

  What is the density of a sample of ammonia

What is the density of a sample of ammonia (NH3) gas in a 4.32 L flask at a pressure of 641 torr and a temperature of 37.0oC?

  State what is the partitioning coefficient of the component

After equilibration GC analysis of octanol phase shows component concentration of 0.4 M. What is the partitioning coefficient of this component? (Octanol/water partitioning coefficient expressed as K = Coct/ Cwater)

  Using a sample as a mixture of cucl2 agno3and fecl3 when a

using a sample as a mixture of cucl2 agno3and fecl3. when a sample of 1.0000-g of this cucl2 agno3and fecl3 mixture is

  Explain how much concentrated acid do need to make

Concentrated acetic acid is 17.5 M; vinegar is 0.87 M acetic acid. How much concentrated acid do you need to make 24 L of vinegar? Use the equation c1V1=c2V2 (where c = concentration and V = volume)

  State nitrogen fertilizer that is manufactured from ammonia

a nitrogen fertilizer that is manufactured from ammonia and carbon dioxide. 2 NH3(g) CO2(g) ? NH2CONH2(aq) H2O(l) What volume of ammonia at 45°C and 1.60 atm is needed to produce 908 g (2 lb) of urea?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd