How many molecules of CO2 are present in 0.6642 moles of CO2?

Acontrol during an experiment. might change remains constant does not exist does change

Energy defines the different "states" of matter. in no more than 3 sentences, describe the amount of kinetic energy that each of the 3 states of matter possesses and relate that to the atom/molecular motion of each "state".

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device