problem1) One pound-mass of air at 10 psia, 70 oF is contained in a piston-cylinder device. The air is now reversibly compressed to 100 psia while its temperature is kept constant. How much heat should be added to this air during the compression? Show all steps.
a) how will you classify sodium benzoate, ionic or molecular or both?
b) based upon rules of solublity, will an ionic compound dissolve in gasoline ?why or why not?
c) why do solutions of most ionic compounds conduct electricity ? why will a molecular compound such as HCI conduct electricty?
d) why do ionic compound tend to have higher melting points than molecular compounds?