Astudent has some $1 and $5 bills in his wallet. he has a total of 16 bills that are worth $40. how many of each type of bill does he have?

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

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

  the mississippians were considered to be  horticulturalists, which means they were