Urgent balance equation ! 20 points! au2 s3 + h2 = au + h2 s i've balanced this myself but not sure if i'm correct so could someone balance this so i can see if i got the same answer? : -)

Which statement justifies that hydrogen peroxide (h2o2) is a polar molecule? the o – h bond is nonpolar and the molecule is asymmetric. the o – h bond is nonpolar and the molecule is symmetric. the o – h bond is polar and the molecule is asymmetric. the o – h bond is polar and the molecule is symmetric.