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

  Explain ir of benzpinacol and to what carbon group

IR of Benzpinacol and to what carbon, proton, or functional group (respectively) would each peak belong?

  What mass of water would need to evaporate from your skin

what mass of water would need to evaporate from your skin in order to dissipate 1.7 times 105 j of heat from your body?

  What effect does conjugation alternating single and double

what effect does conjugation (alternating single and double or alternating single and triple bonds) have on the location

  Compute the temperature at which ice is in equilibrium

From this data, calculate the temperature at which ice is in equilibrium with liquid water.

  Explain chemical in biological systems is the hydrolysis

A critical reaction in the production of energy to do work or drive chemical in biological systems is the hydrolysis of adenosine triphosphate, ATP to adenosine diphosphate ADP as described by ATP(aq) + H20(l) ----> ADP(aq) + HPO4^2- (aq)

  Determine how many grams of oxygen gas are essential

When C2H5OH +3O2 produces 2CO2 + 3H2O,determine how many grams of oxygen gas are essential for complete combustion of 421grams of ethanol ?

  Evaluate the ph of a buffer solution that contains nahco3

Calculate the ph of a buffer solution that contains 0.25M H2CO3 and 0.50M NaHCO3-

  What is the final temperature of the mixture

If 55.0 mL of ethanol {rm{(density}} = 0.789;{rm{g}}/{{rm{mL}}})) initially at 9.0^circ C is mixed with 55.0 mL of water {rm{(density}} = 1.0;{rm{g}}/{{rm{mL}}}) initially at 28.1^circ C in an insulated beaker, and assuming that no heat is lost, w..

  What is the concentration of the substance

A substance has a molar extinction coefficient of 2.4x104cm-1M-1 and an absorbance of 0.10 What is the concentration of this substance in a cuvette with a 1.0 cm path length.

  Define full electron configuration

Give the full electron configuration (# electrons, quantum numbers for last electron added, orbital diagram, electron configuration) for each of the following

  Evaluate the activity and activity coefficient

Calculate the activity and activity coefficient for ethanol in this solution. c. Calculate ?mixG for a solution that contains 0.12 moles of ethanol and 0.83 moles of chloroform at 35.0 oC.

  Explain cyclohexane was found to freeze

A solution containing 0.750 g of an unknown substance in 30.0 g of cyclohexane was found to freeze at 3.1 C. What is the molar mss of the unlown substance?

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