Explain the number of changed nuclei is far smaller

Assignment Help Chemistry

Reference no: EM13489728

Rb-87 decays with a half-life of 48.8 billion years to Sr-87. For short periods of time, there are so few decays that the number of changed nuclei is far smaller than the experimental error. The current limit on object ages therefore is 100,000,000 years or older. What is the percentage of Rb-87 left after 100,000,000 years?

Reference no: EM13489728

Questions Cloud

Explain oxygen coming off the 2nd carbon : Oxygen coming off the 2nd carbon and the 2nd carbon is also attached to the N. Two Carbons are attached to the Nitrogen). Account for the fact 2 equivalents of amine must be used.

How fast does the image of the object move : A spherical mirror has a focal length of +10cm. Find the location and then describe the miage for an object for an object distance of 25cm. How fast does the image of the object move

Explain binary compound formed from the elements : Predict the formula and name of a binary compound formed from the following elements: (a) Na and H, (b)B and O, (c) Na and S, (d) Al and F, (e) F and O, (f)Sr and Cl.

Calculate the speed of the insect : Horseshoe bats (genus Rhinolophus) emit sounds from their nostrils, then listen to the frequency of the sound reflected from their prey to determine the prey's speed. calculate the speed of the insect

Explain the number of changed nuclei is far smaller : Rb-87 decays with a half-life of 48.8 billion years to Sr-87. For short periods of time, there are so few decays that the number of changed nuclei is far smaller than the experimental error. The current limit on object ages therefore is 100,000,00..

How external stakeholders use financial information : Identify the main issues in the chosen area and accurately respond to each of the questions from the chosen area.

How much would it cost to boil a 2.1-liter kettle of water : Agas company in Massachusetts charges $1.30 for 15.0 cubic ft of natural gas. (a) Convert this rate to dollarsper liter of gas. (b) It takes 0.304 cubic ft of gas to boil aliter of water, starting at room temperature (25 degrees), how much would i..

Define the torsion moment : Calculate spring coefficient k = P/δ and discuss the design on how much spring radius r should be changed to increase k two times

Calculate the vertical displacement : calculate the vertical displacement at D and the horizontal displacement at Free-Body Diagram should be recalculated with P and Q.

User Account

All Pages