Calculate the molarity of each ion in a 1.0M ZnCL2 solution

13) a 14) a15) b16) i don't know sorry17) a (maybe)

B"hf and f-"  is the correct answer took the test on edgenuity and got it right     

The answer is a. stable, hope i ya

The internal energy of the system we can term it as total potential energy and kinetic energy. energy flows out of the surrounding from the system then we can say that the internal energy of the final state is lower than its initials. the sign of  δesystem is negative.δesystem = efinal - einitial=-ve  efinal  ∠einitial.