document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=920305>Question 920305</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Weights of atoms and molecules are measured in Atomic Mass Units. A molecule of C2H6 ethane is made up of 2 carbon atoms and 6 Hydrogen atoms weighs 30.07 u. A molecule of C3H8 propane is made up of 3 Carbon aroms and 8 Hydrogen atoms and weighs 44.097 u. Find the weights of a carbon atom and a hydrogen atom.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #558291 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39615)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=558291\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use variables, c atomic mass units for Carbon, and h atomic mass units for Hydrogen.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%282c%2B6h=30.07%2C3c%2B8h=44.097%29 ALIGN=MIDDLE  ALT=\"system%282c%2B6h=30.07%2C3c%2B8h=44.097%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Start with elimination method to eliminate c to first solve for h.  Multiply the ethane equation by 3 and the propane equation by 2, then subtract the equations.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%286c%2B18h=90.21%2C6c%2B16h=88.194%29 ALIGN=MIDDLE  ALT=\"system%286c%2B18h=90.21%2C6c%2B16h=88.194%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2h=2.016 ALIGN=MIDDLE  ALT=\"2h=2.016\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28h=1.008%29 ALIGN=MIDDLE  ALT=\"highlight%28h=1.008%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Use any method you want to find the amu of carbon.  You already know to expect something just a small fraction slightly larger than 12. </SPAN>\n" );
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