A scientist is conducting an experiment to determine the melting point of a substance. They find that the melting point is about 160 0C higher than they expected based on the size and molecular mass of the compound. What would explain their results? Select all correct answers. a. The substance is nonpolar, so London dispersion forces exist
b. Dipole-induced dipole attractions strongly hold the molecules together
c. Temporary dipole-induced attractions form in the solid where it melts
d. The substance is strongly polar, so dipole-dipole attractions exist
e. Hydrogen bonding strongly holds the molecules together in the solid state

i think slash and

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole