PRACTICE ITUse the worked example above to help you solve this problem. The half-life of the radioactive nucleusRa is 1.6x10° yr. If a sample initially contains 3.61x1016 such nudlei, determine the following:(a) the initial activity in curies| µci(b) the number of radium nuclei remaining after 4.3x103 yrnuclei(c) the activity at this later timeEXERCISEHINTS: GETTING STARTED | I'M STUCK!Use the values from PRACTICE IT to help you work this exercise.(a) Find the number of remaining radium nudlei after 3.10x103 yr.N =| nuclei(b) Find the activity at this time.R =

Step:1∙The half life of radioactive nucleus 22688Ra is 1.6×103year∙Initial No. of nuclei…

(a) the initial activity in curies | µCi (b) the number of radium nuclei remaining after 4.3x10 yr |nuclei (c) the activity at this later time | µci RCISE HINTS: GETTING STARTED I I'M STUCK! he values from PRACTICE IT to help you work this exercise. (a) Find the number of remaining radium nuclei after 3.10x10³ yr. | nuclei (b) Find the activity at this time. |µCi

(a) the initial activity in curies | µCi (b) the number of radium nuclei remaining after 4.3x10 yr |nuclei (c) the activity at this later time | µci RCISE HINTS: GETTING STARTED I I'M STUCK! he values from PRACTICE IT to help you work this exercise. (a) Find the number of remaining radium nuclei after 3.10x10³ yr. | nuclei (b) Find the activity at this time. |µCi

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter30: Nuclear Physics

Section30.2: Nuclear Decay And Reactions

Problem 26PP

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