The mole is most similar to:
a pound (a measure of weight)
a liter (a measure of volume)
a dozen (a measure of number)
a gram (a measure of mass)

Answer : The correct option is, a dozen (a measure of number).

Explanation :

Mole : It is defined as the amount of substance that contains Avogadro number of the substance.

Avogadro's number is given by .  That means,

Dozen : It is defined as the amount of substance that contains 12 number of particles.

Hence, the mole is most similar to a dozen (a measure of number).

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.