Find out the age of the oldest rocks on earth

Assignment Help Chemistry
Reference no: EM13543791

A radiometric dating technique uses the decay of U-238 to Pb-206 (the half-life for this process is 4.5 billion years) to determine the age of the oldest rocks on Earth and by implication the age of Earth itself. The oldest uranium-containing rocks on Earth contain approximately equal numbers of uranium atoms and lead atoms. Assuming the rocks were pure uranium when they were formed, how old are the rocks?

Reference no: EM13543791

Questions Cloud

Calculate the change in the mass of the nuclear fuel : Multiple-Concept Example 6 reveiws the principles that play a role in this problem. what is the change in the mass of the nuclear fuel due to the energy being taken from the reactor
Find ratio of rotational and translational kinetic energies : A baseball (mass 0.14 kg, radius 3.7 cm) is spinning with an angular velocity of 55 rad/s. what is the ratio of its rotational and translational kinetic energies
Compute the magnitude of his horizontal recoil velocity : One of James Bond's adversaries is standing on a frozen lake; there is no friction between his feet and the ice. what is the magnitude of his horizontal recoil velocity
Determine what is the ratio of their distances : Star A and B have bolometric magnitudes ma = 5 and mb = 10. If both stars have same absolute magnitude, M, what's the ratio of their distances
Find out the age of the oldest rocks on earth : A radiometric dating technique uses the decay of U-238 to Pb-206 (the half-life for this process is 4.5 billion years) to determine the age of the oldest rocks on Earth and by implication the age of Earth itself.
Explain what is the value of delta g for the reaction : For the reaction CO2(g)+H2(g)=CO(g)+H2O(g) at 1000 K, an equilibrium mixture of the gasses consists of 0.276 mol H2, 0.276 mol CO2, 0.224 mol CO and 0.224 mol H2O. What is the value of delta G for the reaction at this temperature
What is the time required to complete given revolutions : A disk rotates about its central axis starting from rest at t = 0 and accelerates with constant angular acceleration. what is the time required to complete 64 revolutions
Explain the cathode reaction using the anode reaction : A voltaic cell is built, using the anode reaction Cu (s)=Cu^+2(aq)+2e^- and the cathode reaction Fe^+3(aq)+1e^-=Fe^+2(aq). If [Cu+2]=.50M [Fe^+2]=.10 M and [Fe^+3]=.20 M, what will the Ecell be
Calculate how many molecules are in the vessel : Gas is contained in an 8.09 liter vessel at a temperature of 20.6oC and a pressure of 8.84 atm. Determine the number of moles of gas in the vessel. How many molecules are in the vessel

Reviews

Write a Review

Chemistry Questions & Answers

  Blending of two wines with different concentrations of acid

Blending of two wines with different concentrations of acid, Two wines are available for blending: One tank of 1000 L has a Titratable Acidity of 9.0 g/L and another tank containing 2000 L has a Titratable Acidity of 0.6 g/L.

  Define the stereocenter of the molecule

In order to distinguish the R and S forms of a molecule an enzyme must have binding sites for how many of the groups on the stereocenter of the molecule

  Evaluate the cell potential

Calculate the cell potential (emf) for a galvanic cell at 298 K composed of a standard aluminum electrode (Al metal and Al 3+ ions at 1.0 M) and a standard cadmium electrode (Cd metal and Cd 2+ ions at 1.0 M.)

  State what is the limiting reactant

acetic anhydride C4H603 to form aspirin C9H8O4 and acetic acid CH3C00H. What mass of acetic anhydride did the student use? What is the limiting reactant?

  Explain formula units of solid sodium fluoride are produced

If 2 atoms of silver metal react with 1 molecule of fluorine gas at constant pressure, 2 formula units of solid sodium fluoride are produced and 409.2 kJ of heat is released.

  Explain c6h5cooh(s) was burned in a bomb calorimeter

The temperature increased by 10.08 oC. Use these data, plus the information given below for CO2 and H2O, to estimate the standard enthalpy of formation, of H, at 25 oC for this compound of H values at 25 oC for CO2(g) and H2O(l) are 394 kJ mol 1 a..

  State what is the new value of ph

You add 1 mL of 1 M HCl to the buffer. Calculate the molarity of H30+ added as HCl, and the final molarities of acetic acid and acetate ion at equilibrium. What is the new value of pH?

  Compute the change in molar gibbs free energy

Calculate the change in molar Gibbs free energy of tristearin when a deep-sea creature is brought to the surface (p = 1 atm) from a depth of 1.5 km. The density of sea water is 1.03 g/cm-3.

  Use bold and hashed wedges to show the stereochemistry

Draw all stereoisomers of 1,2,3-trimethylcyclopentane. Use bold and hashed wedges to show the stereochemistry.

  What is the partial pressure of each gas

Nitrogen dioxide (NO2) cannot be obtained in a pure form in the gas phase because it exists as a mixture of NO2 and N2O4. At 25°C and 0.98 atm, the density of this gas mixture is 2.7 g/L.

  Find out the ph of an aqueous solution

Determine the pH of an aqueous solution of CaCO3 that contains 1.7*10^-6 M of hydroxide ion [OH^-].

  What fraction of this mixture is ice

The molar enthalpy of fusion of ice at 0 0C is 6.02 kJ/mol; the molar heat capacity of supercooled water is 75.3 J/molK. (a) One mole of supercooled water at -10 0C is induced to crystallize in a heat-insulated vessel.

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