Carbon-14 is radioactive and decays by beta decay

Reference no: EM13697229

Problem- Carbon-14 is radioactive and decays by beta decay with a half-life of 5730 years. One gram of wood from a tree takes up an initial amount of 1.49 nanograms of carbon-14 at some point in the past (due to photosynthesis using carbon dioxide). This one gram of wood is now measured to have an amount of 0.14 nanograms.

a. Write the nuclear decay reaction for this process.

b. How much time has passed since the carbon-14 was initially taken up?

c. What will the activity level (in counts/sec and also in Curies) of the one gram of wood now?

Determine the solution for the above problem express your work in detail

Reference no: EM13697229

Questions Cloud

Calculate the emf of the cell : Problem- Consider an electrochemical cell consisting of two vessels connected by a porous separator. One vessel contains 0.750 M HCl solution and an Ag wire electrode coated with AgCl solid. The other vessel contains 2.10 M MgCl2 solution and a Mg..

A hydrogen atom occurring in a single step as a fundamental : Gas phase reaction of a bromine molecule and a hydrogen atom occurring in a single step as a fundamental reaction at 400 degrees C and activation energy of 60 kJ/mol.

Explain the gas phase reaction of a bromine molecule : Problem- The gas phase reaction of a bromine molecule and a hydrogen atom occurs in a single step as a fundamental reaction. The temperature is 400 degrees C. Assume an activation energy of 60 kJ/mol. a. Look up the collision diameters. If necessar..

Explain scale calibrated in units of degrees ammonia : Problem- Assume that your new temperature scale is based on ammonia, NH3. On the Celsius scale, ammonia has a melting point of -77.7?C and a boiling point of -33.4?C, but on your new scale calibrated in units of degrees ammonia, ?A

Carbon-14 is radioactive and decays by beta decay : Problem- Carbon-14 is radioactive and decays by beta decay with a half-life of 5730 years. One gram of wood from a tree takes up an initial amount of 1.49 nanograms of carbon-14 at some point in the past

What is the hydronium ion concentration of a solution : Problem- What is the hydronium ion concentration of a solution of 0.260 M acid and 0.640 M of its conjugate base if the ionization constant is 2.06 x 10E-6.

What is the molar absorptivity of compound x : Problem- A 0.0000650 M sample of Compound X in a solvent has an absorbance of 0.225 at 528 nm in a 1.000-cm cuvet. The solvent alone has an absorbance of 0.056. What is the molar absorptivity of Compound X

Calculate the number of moles of naclo that was added : Problem- A solution made by adding NaClO to enough water to make 2.00 L of solution has a pH of 10.25. Calculate the number of moles of NaClO that was added.

What is the percent dissociation of acetic acid in vinegar : Problem- Vinegar is 5.0 % solution by weight of acetic acid in water. Given that the pH for acetic acid is 2.41 the Ka= 1.8E-5 and assuming the density of vinegar to be 1.00g/cm^3. What is the percent dissociation of acetic acid in vinegar

User Account

All Pages