The sum of the protons and neutrons in an atom equals the
a.
atomic number
c.
atomic mass unit
b.
nucleus number
d.
mass number

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?

Uranium can supply energy for the worlds electricity without admitting harmful greenhouse gases which of these statements best describes an outcome of uranium mining

•hydration •dissociation •dissolving which one goes to which