An unknown acid is less acidic than lemon juice.  Compare to…

An unknown acid is less acidic than lemon juice.  Compare to the lemon juice, the unknown acid has a (a)  larger hydrogen ion concentration and higher pH. (b)  smaller hydrogen ion concentration and higher pH. (c)  smaller hydrogen ion concentration and lower pH. (d)  larger hydrogen ion concentration and lower pH.

The formula of lithium oxide is Li2O.  The formula of Ruthen…

The formula of lithium oxide is Li2O.  The formula of Ruthenium(IV) bromide is RuBr4.  What is the formula of the compound formed if the Ruthenium and oxide from the above combine?      (a)  Ru2O                   (b)  RuO                 (c)  RuO4                  (d)  Ru2O4                   (e)  RuO2