What percent of a present amount of radioactive radium (226Ra) will remain after 1200 years? The half life of 226Ra is 1599 year
s.
1 answer:
Answer:
59.44%
Step-by-step explanation:
<em></em>
<em></em>
<em>Where = mass remaining</em>
<em> =original mass.</em>
<em>t= time </em>
<em> =half life</em>
=1599, t= 1200, =226, =?
n= 0.750469
=134.3367amu
percentage of mass remaining = *100%
= 59.44%
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