document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1104707>Question 1104707</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An isotope has a&#8203; half-life of 92 years. How much of a 27&#8203;-gram sample is left after 150 &#8203;years? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #719398 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=719398\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> P=Poe-kt<BR>\n" );
document.write( "(1/2)=e^-kt<BR>\n" );
document.write( "ln(1/2)=-kt<BR>\n" );
document.write( "-k=ln(0.5)/92=-0.0075<BR>\n" );
document.write( "k=0.0075<BR>\n" );
document.write( "P=27*e^(-0.0075*150)=27*e^(-1.125)=27*0.3247=8.77 gm.<BR>\n" );
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