Apure substance melts at 88 degrees celsius and does not conduct electricity in either the solid state or the liquid state. it does not dissolve very well in water but it does dissolve in nonpolar solvents is most likely to be what type of compound

a. a crystalline compound
b. a covalent compound
c. a metallic compound
d. an ionic compound

The answer to your question is: Covalent compounds.

Explanation:

In chemistry there are two kinds of compounds:

Ionic compounds are composed by a metal and a nonmetal, and some are

                              good conductors of electricity in solid state or when they

                              dissolve in water.

Covalent compounds are composed by to nonmetals, their melting point is

                                      lower compare to ionic compounds and are not

                                      conductors of electricity in solid state or when are

                                      dissolve in water.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.