Choose all the pairs of elements that will form a compound with an covalent/molecular bond a. phosphorus and iodine
b. rubidium and fluorine
c. sulfur and chlorine
d. aluminum and bromine

Different isotopes indicate that an element will have different numbers of

If a reactant was removed, did the new equilibrium system shift to make more reactants or more products?

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?