How do you find the molar mass of a compound?

How much energy moves onto the next level, in an energy pyramid

Which statement is true about ionic compounds?

Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d.the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge