Google Chart API
chl={}^1_1\mbox{H} \\ {}^2_1\mbox{H} \\ {}^3_1\mbox{H} \\ \mbox{H}_{2}\mbox{O} \\ \mathrm{H}_{2}\mathrm{O} \\ \mbox{Cl}^{2-}
<img src="http://chart.apis.google.com/chart ?cht=tx &chs=1x0 &chf=bg,s,FFFFFF00 &chco=000000 &chl=y=ax%2bb"/> chl=y=ax^2%2bbx%2bc <img src="http://chart.apis.google.com/chart ?cht=tx &chs=1x0 &chf=bg,s,000000 &chco=ffffff &chl=(a%2bb)^2=a^2%2b2ab%2bb^2" /> chco=ff000…