. One type of potential energy is chemical energy. Potential chemical is stored energy that is released during a chemical reaction. All BUT one example below is a type of potential chemical energy. That is a) nine volt battery
b) the gas in a car engine
c) a rock on top of a hill
d) the head of a matchstick

Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.

Your awser would be a acetone

Answer two atoms of oxygen;