An electric iron is used to remove wrinkles from clothing. the electric iron is made of metal. which property of this substance is most useful for this application?
a boiling point
b density
c electrical conductivity
d thermal conductivity

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.

Determine the empirical formula for succinic acid that is composed of 40.60% carbon, 5.18% hydrogen, and 54.22% oxygen.

Can someone me with 3 and 4 plz. this is for masteries test.