Order of events
number the following statements 1-5 to correctly describe how a battery works.
_electricity flows through the circuit, powering the device.
_the battery's chemical energy is used up.
_chemical reactions at the anode release electrons.
_electricity flows into the cathode.
_lons from the anode react with ions in the cathode.

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123