Write the correct sign of ΔH system for each of the following changes in physical state. a. C2H5OH(s) C2H5OH(1)

b. H2O(g) H2O(1)

c. CH3OH(1) CH3OH(g)

d. NH3(1) NH3(s)

you gotta add the following molecules so we can give u an answer

explanation:

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