Complete the following reaction: methylglycerol + KHSO4

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

One does not belong why? ice, gold ,wood ,diamond and table salt

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?