The molecules in compound ab are highly polar. the molecules in compound xy are nonpolar. which is true for these two compounds? the forces between compounds ab and xy are the same. compound xy has a higher boiling point than compound ab. compound ab has a higher boiling point than compound xy.

An unknown substance has a melting point of 1064 ∘c, is insoluble in water, conducts electricity as a solid, and is hard. given these properties, which of the following are possible identities for the unknown substance? check all that apply. view available hint(s) check all that apply. sio2 f2 au kbr

In what direction does the medium move relative to the direction of the wave? explain.

In a particular chemical reaction, the energy of the reactants is 30 kj and the energy of the products is 5 kj. 
 the maximum energy of the system is 40 kj. sketch a potential energy diagram for this reaction. make sure to label the energy of the reactants, the energy of the products, the activation energy, and the enthalpy change for the reaction.