When comparing an electron's ground state with that of its excited state; which is the higher entropy and which is the lower entropy? Provide a brief explanation as to why?
HINT: Remember the relationship of the electron to its nucleus!

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy