5) Polonium-214 can decay by alpha decay. a)The product of its decay has how man

Question

5) Polonium-214 can decay by alpha decay. a)The product of its decay has how many fewer protons the poionium-214? b) Write the nuclear equation for this decay. 6) Write the nuclear equation for the decay of 60 27 Co? If there are any alpha, beta or gamma particles created what is their maximum kinetic energy created? 7) Francium-223((223 87 Fr))has a half-life of 21.8 min. a) How many nuclei are initial present in a 210 mg sample? b) How many nuclei are present 1h and 49 min later? 8) What is the activity of a sample of 14 6 C that contains 8.9 x 10^22 nuclei?

Explanation / Answer

8) The activity of the sample is,

A=Lambda*N=0.693N/T=0.693*8.9*1022/5730 years*365d*24 h*3600s=3.4*1011 decays/s

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