HELP ASAP!! how can nuclear energy be classified as an inexhaustible energy resource??

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption

Is a pencil falling to the floor anon contact force, a force, or a contact force