Decay of radium-223 by gamma (γ) emission and
Write the balanced nuclear equations for the alpha and beta decay of Radium-226

Calculate the number of molecules present in 0.750 mol of mgo.

In 2002, the rare earth elements mine in mountain pass, california was closed because

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?