Typical audience for a vaudeville show

What does a numerical subscript following an element in a chemical formula mean?

List and describe the neurological effects of the vocs and other air pollutants,as described by dr.theo colborn

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.