When representative elements form ionic compounds, which
elements achieve full octets?
a
metals and nonmetals
b Neither achieves a full octet
c metals only
d nonmetall only

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse