document.write( "Question 1122713: The half life of a certain radioactive materials is 3 hours. How many kilograms of this material will be left after 48 hours if there are initially 10 kilograms? \n" ); document.write( "

Algebra.Com's Answer #738868 by ikleyn(52802) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "

\r\n" );
document.write( "In such problems, using exponents like  is the way to create unnecessary difficulties for yourself.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Simply use the fact that the 48 hours are 16 times half-life.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "It will give you    remaining mass (in kilograms) of the original material.\r\n" );
document.write( "

\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Also, to better understand the Physics (which most school students simply do not know),
\n" ); document.write( "keep in your mind, that actually the total mass of a sample (the bulk mass) changes INSIGNIFICANTLY at the radioactive decay. \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "

\r\n" );
document.write( "    Simply one chemical element is transforming to another chemical element / (or to its isotope).\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "    Again, the total mass of the original sample material changes insignificantly.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "    Otherwise, it would be a nuclear explosion.\r\n" );
document.write( "

\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );