How are a mole and a dozen similar?
a. each represents a certain mass of material.
b. each names a given number of objects.
c. each identifies a specific volume.
d. each measures a given number of amus.

How will the emission of an alpha particle affect the atomic number of an atom

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Draw the lewis dot structure for each of the following polyatomic ions