A radioactiveisotope of mass number 94 has been prepared by neutron bombardment. If 4.7 ug (1 ug = x 10 ^-6 g) of this isotope registers 20 counts per minute on a radioactivity counter, what is the half life of this isotope?
Half-Life of 14-Carbon Isotope. The activity of a 1 gram carbon sample of a living organism is 0.23Bq. ... The half-life of 14-carbon isotope is 5730 years. ...
Isotopes, Half Lives and Neutron Activation. ...Isotopes, half lives and neutron activation are examined in the following solution. Posting ID: 262135:
Radioactive Dating Methods of Three Isotopes. ... Number of Half-Lives" will be on the x-axis and your "Amount of Isotope Remaining (g ... 1) How long is its half-life? ...
... taken for a radio-active isotope to decay to half its mass (N/2) is given by solving (1) with N(t) replaced by N/2 and t the time replaced by the half life T(1 ...
... 9) Some naturally occurring isotopes are radioactive (A ... As expected the most stable isotope is P32 ...Half life means that after this period half of the sample will ...
... a) Which isotope contributes the greater activity to the radiation ... So the two isotopes activities will be equal after ... α N 0 e −α t dt Half life means that ...
... The parent isotopes have been decaying since that time, and so any parent isotope with a short half-life should be extinct by now. Carbon-14 is an exception. ...
... Remember the decay equation for radioactive isotopes is rate = ln No N ... 20. The half-life of Pa-234 is 6.75 hr ... what fraction of a sample of isotope remains after ...
