Http://thedailygood.thegoodtrade.com/cgi-bin/content/view.php?data=schritte_international_2_lehrerhandbuch_free&filetype=pdf&id=227de7e022acfc85ffe4ac8dd287e57d
http://dev.twinsisters.com/schritte_international_3.pdf
http://homolog.meiasola.com.br/cgi-bin/content/view.php?q=schritte+international+2+answer+key&filetype=pdf&id=5745c2ef374afc73fe2e95e18a68962a
http://homolog.meiasola.com.br/cgi-bin/content/view.php?q=schritte+international+1+pdf&filetype=pdf&id=393a5328daebbefb3e7ffffc8bb1e134
keq = [SO3]^2
-------------
[SO2]^2[O2]
Products over reactants and coefficients as exponents
I believe it is 4,186 miles...
start working, or keeping going to school, hope this helps